2023
|
da C. Silva, D. R.; Wang, Z.; Gutierrez-Osuna, R. Towards Participant-Independent Stress Detection Using Instrumented Peripherals Journal Article In: IEEE Transactions on Affective Computing, 2023. @article{dennis2021tac,
title = {Towards Participant-Independent Stress Detection Using Instrumented Peripherals},
author = {D. R. da C. Silva and Z. Wang and R. Gutierrez-Osuna},
url = {https://ieeexplore.ieee.org/document/9361293
https://psi.engr.tamu.edu/wp-content/uploads/2023/11/keyboard2023dennis.pdf},
year = {2023},
date = {2023-01-01},
urldate = {2021-02-05},
journal = {IEEE Transactions on Affective Computing},
keywords = {Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
2022
|
Das, A.; Mortazavi, B.; Sajjadi, S.; Chaspari, T.; Ruebush, L. E.; Deutz, N. E.; Cote, G. L.; Gutierrez-Osuna, R. Predicting the macronutrient composition of mixed meals from dietary biomarkers in blood Journal Article In: IEEE Journal of Biomedical and Health Informatics, vol. 26, no. 6, pp. 2726-2736, 2022. @article{anurag2021aminoacids,
title = {Predicting the macronutrient composition of mixed meals from dietary biomarkers in blood},
author = {A. Das and B. Mortazavi and S. Sajjadi and T. Chaspari and L. E. Ruebush and N. E. Deutz and G. L. Cote and R. Gutierrez-Osuna},
url = {https://ieeexplore.ieee.org/document/9645322
https://psi.engr.tamu.edu/wp-content/uploads/2021/12/jbhi-aminoacids-2021-preprint.pdf},
year = {2022},
date = {2022-06-04},
urldate = {2021-12-05},
journal = {IEEE Journal of Biomedical and Health Informatics},
volume = {26},
number = {6},
pages = {2726-2736},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Yang, M.; Dave, D.; Erraguntla, M.; Cote, G.; Gutierrez-Osuna, R. Joint hypoglycemia prediction and glucose forecasting via deep multi-task learning Proceedings Article In: Proc. ICASSP, 2022. @inproceedings{mu2022icassp,
title = {Joint hypoglycemia prediction and glucose forecasting via deep multi-task learning},
author = {M. Yang and D. Dave and M. Erraguntla and G. Cote and R. Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2023/07/yang2022icassp_hypoglycemia.pdf
https://ieeexplore.ieee.org/document/9746129},
year = {2022},
date = {2022-05-22},
urldate = {2022-05-22},
booktitle = {Proc. ICASSP},
keywords = {Continuous glucose monitors, Deep learning, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Branan, Kimberly L.; Reyes, Gilberto O. Flores; Abel, John A.; Erraguntla, Madhav; Gutierrez-Osuna, Ricardo; Coté, Gerard L. Multi-modal physiological sensing on the upper arm Proceedings Article In: Proc. SPIE, 2022. @inproceedings{kimberly2022spie,
title = {Multi-modal physiological sensing on the upper arm},
author = {Kimberly L. Branan and Gilberto O. Flores Reyes and John A. Abel and Madhav Erraguntla and Ricardo Gutierrez-Osuna and Gerard L. Coté},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2022/04/1195608.pdf},
year = {2022},
date = {2022-03-02},
urldate = {2022-03-02},
booktitle = {Proc. SPIE},
journal = {Proceedings of SPIE},
volume = {11956},
keywords = {Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2021
|
Chakravarthy, N. V.; Silva, D. R. Da Cunha; Gutierrez-Osuna, R. Evaluating the role of breathing guidance on game-based interventions for relaxation training Journal Article In: Frontiers in Digital Health, 2021. @article{nitin2021digitalhealth,
title = {Evaluating the role of breathing guidance on game-based interventions for relaxation training},
author = {N. V. Chakravarthy and D. R. Da Cunha Silva and R. Gutierrez-Osuna},
url = {https://www.frontiersin.org/articles/10.3389/fdgth.2021.760268/abstract
https://psi.engr.tamu.edu/wp-content/uploads/2021/12/nitin2021frontiers.pdf},
year = {2021},
date = {2021-11-18},
urldate = {2021-11-18},
journal = {Frontiers in Digital Health},
keywords = {Games, Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Yang, M.; Paromita, P.; Chaspari, T.; Das, A.; Sajjadi, S.; Mortazavi, B. J.; Gutierrez-Osuna, R. A Metric Learning Approach for Personalized Meal Macronutrient Estimation from Postprandial Glucose Response Signals Proceedings Article In: Proc. IEEE/EMBS Intl. Conf. Biomedical And Health Informatics (BHI 2021)., 2021. @inproceedings{theodora2021bhi,
title = {A Metric Learning Approach for Personalized Meal Macronutrient Estimation from Postprandial Glucose Response Signals},
author = {M. Yang and P. Paromita and T. Chaspari and A. Das and S. Sajjadi and B. J. Mortazavi and R. Gutierrez-Osuna},
url = {http://ceur-ws.org/Vol-2903/IUI21WS-HEALTHI-10.pdf
https://psi.engr.tamu.edu/wp-content/uploads/2022/01/IUI21WS-HEALTHI-10.pdf},
year = {2021},
date = {2021-07-27},
urldate = {2021-07-27},
booktitle = {Proc. IEEE/EMBS Intl. Conf. Biomedical And Health Informatics (BHI 2021).},
keywords = {Chemical sensors, Continuous glucose monitors, Deep learning, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Hagve, M.; Simbo, S. Y.; Ruebush, L. E.; Engelen, M. P. K. J.; Gutierrez-Osuna, R.; Mortazavi, B. J.; Cote, G. L.; Deutz, N. E. P. Postprandial concentration of circulating branched chain amino acids are able to predict the carbohydrate content of the ingested mixed meal Journal Article In: Clinical Nutrition, 2021. @article{martin2021clinicalnutrition,
title = {Postprandial concentration of circulating branched chain amino acids are able to predict the carbohydrate content of the ingested mixed meal},
author = {M. Hagve and S. Y. Simbo and L. E. Ruebush and M. P. K. J. Engelen and R. Gutierrez-Osuna and B. J. Mortazavi and G. L. Cote and N. E. P. Deutz},
url = {https://www.sciencedirect.com/science/article/pii/S0261561421003502
https://psi.engr.tamu.edu/wp-content/uploads/2021/07/1-s2.0-S0261561421003502-main.pdf},
year = {2021},
date = {2021-07-13},
journal = {Clinical Nutrition},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Sajjadi, S.; Mortazavi, B. J.; Das, A.; Chaspari, T.; Paromita, P.; Ruebush, L. E.; Deutz, N. E.; Gutierrez-Osuna, R. Towards the development of subject-independent inverse metabolic models Proceedings Article In: In Proc. ICASSP, 2021. @inproceedings{hooman2021icassp,
title = {Towards the development of subject-independent inverse metabolic models},
author = {S. Sajjadi and B. J. Mortazavi and A. Das and T. Chaspari and P. Paromita and L. E. Ruebush and N. E. Deutz and R. Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2021/08/ICASSP_21_SubjectIndependentIMM_CameraReady.pdf},
year = {2021},
date = {2021-06-06},
booktitle = {In Proc. ICASSP},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Das, A.; Mortazavi, B.; Chaspari, T.; Sajjadi, S.; Paromita, P.; Ruebush, L.; Deutz, N.; Gutierrez-Osuna, R. A sparse coding approach to automatic diet monitoring with continuous glucose monitors Proceedings Article In: In Proc. ICASSP, 2021. @inproceedings{anurag2021icassp,
title = {A sparse coding approach to automatic diet monitoring with continuous glucose monitors},
author = {A. Das and B. Mortazavi and T. Chaspari and S. Sajjadi and P. Paromita and L. Ruebush and N. Deutz and R. Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2021/08/ICASSP_2021_AnuragDas.pdf},
year = {2021},
date = {2021-06-06},
booktitle = {In Proc. ICASSP},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Paromita, P.; Chaspari, T.; Sajjadi, S.; Das, A.; Mortazavi, B. J.; Gutierrez-Osuna, R. Personalized Meal Classification Using Continuous Glucose Monitors Proceedings Article In: In Proc. IUI HEALTHI Workshop, 2021. @inproceedings{psyche2021healthi,
title = {Personalized Meal Classification Using Continuous Glucose Monitors},
author = {P. Paromita and T. Chaspari and S. Sajjadi and A. Das and B. J. Mortazavi and R. Gutierrez-Osuna},
year = {2021},
date = {2021-04-13},
urldate = {2021-04-13},
booktitle = {In Proc. IUI HEALTHI Workshop},
keywords = {Chemical sensors, Continuous glucose monitors, Deep learning, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Hair, A.; Ballard, K. J.; Markoulli, C.; Monroe, P.; McKechnie, J.; Ahmed, B.; Gutierrez-Osuna, R. A Longitudinal Evaluation of Tablet-Based Child Speech Therapy with Apraxia World Journal Article In: ACM Transactions On Accessible Computing, vol. 14, no. 1, 2021. @article{adam2021TACCESS,
title = {A Longitudinal Evaluation of Tablet-Based Child Speech Therapy with Apraxia World},
author = {A. Hair and K. J. Ballard and C. Markoulli and P. Monroe and J. McKechnie and B. Ahmed and R. Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2021/08/hair_taccess_2021.pdf},
doi = {10.1145/3433607},
year = {2021},
date = {2021-03-15},
journal = {ACM Transactions On Accessible Computing},
volume = {14},
number = {1},
abstract = {Digital games can make speech therapy exercises more enjoyable for children and increase their motivation during therapy. However, many such games developed to date have not been designed for long-term use. To address this issue, we developed Apraxia World, a speech therapy game specifically intended to be played over extended periods. In this study, we examined pronunciation improvements, child engagement over time, and caregiver and automated pronunciation evaluation accuracy while using our game over a multi-month period. Ten children played Apraxia World at home during two counterbalanced four-week treatment blocks separated by a two-week break. In one treatment phase, children received pronunciation feedback from caregivers and in the other treatment phase, utterances were evaluated with an automated framework built into the game. We found that children made therapeutically significant speech improvements while using Apraxia World, and that the game successfully increased engagement during speech therapy practice. Additionally, in offline mispronunciation detection tests, our automated pronunciation evaluation framework outperformed a traditional method based on goodness of pronunciation scoring. Our results suggest that this type of speech therapy game is a valid complement to traditional home practice.},
keywords = {Games, Health, Speech},
pubstate = {published},
tppubtype = {article}
}
Digital games can make speech therapy exercises more enjoyable for children and increase their motivation during therapy. However, many such games developed to date have not been designed for long-term use. To address this issue, we developed Apraxia World, a speech therapy game specifically intended to be played over extended periods. In this study, we examined pronunciation improvements, child engagement over time, and caregiver and automated pronunciation evaluation accuracy while using our game over a multi-month period. Ten children played Apraxia World at home during two counterbalanced four-week treatment blocks separated by a two-week break. In one treatment phase, children received pronunciation feedback from caregivers and in the other treatment phase, utterances were evaluated with an automated framework built into the game. We found that children made therapeutically significant speech improvements while using Apraxia World, and that the game successfully increased engagement during speech therapy practice. Additionally, in offline mispronunciation detection tests, our automated pronunciation evaluation framework outperformed a traditional method based on goodness of pronunciation scoring. Our results suggest that this type of speech therapy game is a valid complement to traditional home practice. |
Parnandi, A.; Gutierrez-Osuna, R. Partial reinforcement in game biofeedback for relaxation training Journal Article In: IEEE Transactions on Affective Computing, vol. 12, no. 1, pp. 141-153, 2021. @article{parnandi2018taffc,
title = {Partial reinforcement in game biofeedback for relaxation training},
author = {A. Parnandi and R. Gutierrez-Osuna },
url = {https://ieeexplore.ieee.org/document/8400398
https://psi.engr.tamu.edu/wp-content/uploads/2021/02/08400398.pdf},
year = {2021},
date = {2021-02-28},
journal = {IEEE Transactions on Affective Computing},
volume = {12},
number = {1},
pages = {141-153},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
2020
|
Ahmed, B; Zafar, M; Rihawi, R; Gutierrez-Osuna, R Gaming away stress: Using biofeedback games to learn paced breathing Journal Article In: IEEE Transactions on Affective Computing, vol. 11, no. 3, pp. 519-531, 2020. @article{ahmed2018tac,
title = {Gaming away stress: Using biofeedback games to learn paced breathing},
author = {B Ahmed and M Zafar and R Rihawi and R Gutierrez-Osuna},
url = {https://ieeexplore.ieee.org/document/8319498},
year = {2020},
date = {2020-12-02},
journal = {IEEE Transactions on Affective Computing},
volume = {11},
number = {3},
pages = {519-531},
keywords = {Electrodermal activity, Games, Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Zaman, S.; Wesley, A.; Silva, D. Rodrigo Da Cunha; Buddharaju, P.; Akbar, F.; Gao, G.; Mark, G.; Gutierrez-Osuna, R.; Pavlidis, I. Stress and productivity patterns of interrupted, synergistic, and antagonistic office activities Journal Article In: Scientific Data, vol. 6, no. 1, 2020. @article{zaman2019scientificdata,
title = {Stress and productivity patterns of interrupted, synergistic, and antagonistic office activities},
author = {S. Zaman and A. Wesley and D. Rodrigo Da Cunha Silva and P. Buddharaju and F. Akbar and G. Gao and G. Mark and R. Gutierrez-Osuna and I. Pavlidis},
url = {https://www.nature.com/articles/s41597-019-0249-5
https://psi.engr.tamu.edu/wp-content/uploads/2020/04/shaila2019scientificdata.pdf},
year = {2020},
date = {2020-11-08},
journal = {Scientific Data},
volume = {6},
number = {1},
keywords = {Electrodermal activity, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
McKechnie, J.; Ahmed, B.; Gutierrez-Osuna, R.; Murray, E.; McCabe, P.; Ballard, K. The influence of type of feedback during tablet-based delivery of intensive treatment for childhood apraxia of speech Journal Article In: Journal of Communication Disorders, 2020. @article{McKechnie2020tabbyTalks,
title = {The influence of type of feedback during tablet-based delivery of intensive treatment for childhood apraxia of speech},
author = {J. McKechnie and B. Ahmed and R. Gutierrez-Osuna and E. Murray and P. McCabe and K. Ballard},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2020/08/1-s2.0-S0021992420300940-main.pdf
https://www.sciencedirect.com/science/article/pii/S0021992420300940},
year = {2020},
date = {2020-05-20},
journal = {Journal of Communication Disorders},
keywords = {Health, Speech},
pubstate = {published},
tppubtype = {article}
}
|
Hair, A; Markoulli, C; Monroe, P; McKechnie, J; Ballard, K J; Ahmed, B; Gutierrez-Osuna, R Preliminary Results From a Longitudinal Study of a Tablet-Based Speech Therapy Game Proceedings Article In: Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing, ACM, 2020, ISBN: 978-1-4503-6819-3/20/04. @inproceedings{hair2020chi,
title = {Preliminary Results From a Longitudinal Study of a Tablet-Based Speech Therapy Game},
author = {A Hair and C Markoulli and P Monroe and J McKechnie and K J Ballard and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2020/02/hair2020chi.pdf},
doi = {10.1145/3334480.3382886},
isbn = {978-1-4503-6819-3/20/04},
year = {2020},
date = {2020-04-25},
booktitle = {Extended Abstracts of the 2020 CHI Conference on Human Factors in Computing},
publisher = {ACM},
abstract = {We previously developed a tablet-based speech therapy game called Apraxia World to address barriers to treatment and increase child motivation during therapy. In this study, we examined pronunciation improvements, child engagement over time, and caregiver evaluation performance while using our game. We recruited ten children to play Apraxia World at home during two four-week treatment blocks, separated by a two-week break; nine of ten have completed the protocol at time of writing. In the treatment blocks, children’s utterances were evaluated either by caregivers or an automated pronunciation framework. Preliminary analysis suggests that children made significant therapy gains with Apraxia World, even though caregivers evaluated pronunciation leniently. We also collected a corpus of child speech for offline examination. We will conduct additional analysis once all participants complete the protocol.},
keywords = {Automatic Speech Recognition, Childhood apraxia of speech, Health, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
We previously developed a tablet-based speech therapy game called Apraxia World to address barriers to treatment and increase child motivation during therapy. In this study, we examined pronunciation improvements, child engagement over time, and caregiver evaluation performance while using our game. We recruited ten children to play Apraxia World at home during two four-week treatment blocks, separated by a two-week break; nine of ten have completed the protocol at time of writing. In the treatment blocks, children’s utterances were evaluated either by caregivers or an automated pronunciation framework. Preliminary analysis suggests that children made significant therapy gains with Apraxia World, even though caregivers evaluated pronunciation leniently. We also collected a corpus of child speech for offline examination. We will conduct additional analysis once all participants complete the protocol. |
Blank, C.; Zaman, S.; Wesley, A.; Tsiamyrtzis, P.; Silva, D. R. Da Cunha; Gutierrez-Osuna, R.; Mark, G.; Pavlidis, I. Emotional Footprints of Email Interruptions Proceedings Article In: Proc. CHI, 2020. @inproceedings{blank-2020-chi,
title = {Emotional Footprints of Email Interruptions},
author = {C. Blank and S. Zaman and A. Wesley and P. Tsiamyrtzis and D. R. Da Cunha Silva and R. Gutierrez-Osuna and G. Mark and I. Pavlidis},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2020/06/3313831.3376282.pdf},
year = {2020},
date = {2020-04-25},
booktitle = {Proc. CHI},
keywords = {Electrodermal activity, Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2019
|
Hair, A; Ballard, K J; Ahmed, B; Gutierrez-Osuna, R Evaluating Automatic Speech Recognition for Child Speech Therapy Applications Proceedings Article In: ACM SIGACCESS Conference on Computers and Accessibility, ACM 2019, ISBN: 978-1-4503-6676-2/19/10. @inproceedings{hair2019evaluating,
title = {Evaluating Automatic Speech Recognition for Child Speech Therapy Applications},
author = {A Hair and K J Ballard and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2019/08/hair2019evaluating.pdf},
doi = {10.1145/3308561.3354606},
isbn = {978-1-4503-6676-2/19/10},
year = {2019},
date = {2019-10-28},
booktitle = {ACM SIGACCESS Conference on Computers and Accessibility},
organization = {ACM},
abstract = {Automatic speech recognition (ASR) technology can be a useful tool in mobile apps for child speech therapy, empowering children to complete their practice with limited caregiver supervision. However, little is known about the feasibility of performing ASR on mobile devices, particularly when training data is limited. In this study, we investigated the performance of two low-resource ASR systems on disordered speech from children. We compared the open-source PocketSphinx (PS) recognizer using adapted acoustic models and a custom template-matching (TM) recognizer. TM and the adapted models significantly out-perform the default PS model. On average, maximum likelihood linear regression and maximum a posteriori adaptation increased PS accuracy from 59.4% to 63.8% and 80.0%, respectively, suggesting that the models successfully captured speaker-specific word production variations. TM reached a mean accuracy of 75.8%. },
keywords = {Automatic Speech Recognition, Childhood apraxia of speech, Health, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
Automatic speech recognition (ASR) technology can be a useful tool in mobile apps for child speech therapy, empowering children to complete their practice with limited caregiver supervision. However, little is known about the feasibility of performing ASR on mobile devices, particularly when training data is limited. In this study, we investigated the performance of two low-resource ASR systems on disordered speech from children. We compared the open-source PocketSphinx (PS) recognizer using adapted acoustic models and a custom template-matching (TM) recognizer. TM and the adapted models significantly out-perform the default PS model. On average, maximum likelihood linear regression and maximum a posteriori adaptation increased PS accuracy from 59.4% to 63.8% and 80.0%, respectively, suggesting that the models successfully captured speaker-specific word production variations. TM reached a mean accuracy of 75.8%. |
Akbar, F.; Mark, G.; Pavlidis, I.; Gutierrez-Osuna, R. An Empirical Study Comparing Unobtrusive Physiological Sensors for Stress Detection in Computer Work Journal Article In: Sensors, vol. 19, 2019. @article{akbar2019sensors,
title = {An Empirical Study Comparing Unobtrusive Physiological Sensors for Stress Detection in Computer Work},
author = {F. Akbar and G. Mark and I. Pavlidis and R. Gutierrez-Osuna},
url = {https://www.mdpi.com/1424-8220/19/17/3766
https://psi.engr.tamu.edu/wp-content/uploads/2020/04/akbar2019sensors.pdf},
year = {2019},
date = {2019-08-30},
journal = {Sensors},
volume = {19},
keywords = {Electrodermal activity, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Huo, Z.; Mortazavi, B. J.; Chaspari, T.; Deutz, N.; Ruebush, L.; Gutierrez-Osuna, R. Predicting the meal macronutrient composition from continuous glucose monitors Proceedings Article In: Proc. IEEE Conf. on Biomedical and Health Informatics, 2019. @inproceedings{huo-2019-bhi,
title = {Predicting the meal macronutrient composition from continuous glucose monitors},
author = {Z. Huo and B. J. Mortazavi and T. Chaspari and N. Deutz and L. Ruebush and R. Gutierrez-Osuna},
year = {2019},
date = {2019-05-19},
booktitle = {Proc. IEEE Conf. on Biomedical and Health Informatics},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Parnandi, A; Gutierrez-Osuna, R Visual Biofeedback and Game Adaptation in Relaxation Skill Transfer Journal Article In: IEEE Transactions on Affective Computing, vol. 10, no. 2, pp. 276 - 289, 2019. @article{parnandi21017tac,
title = {Visual Biofeedback and Game Adaptation in Relaxation Skill Transfer},
author = {A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2019/06/avinash-2019-tac.pdf},
year = {2019},
date = {2019-05-17},
journal = {IEEE Transactions on Affective Computing},
volume = {10},
number = {2},
pages = {276 - 289},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Akbar, F.; Bayraktaroglu, A. E.; Gao, G.; Grover, T.; Mark, G.; Storer, K.; Silva, D. R. Da Cunha; Gutierrez-Osuna, R.; Wang, Z.; Buddharaju, P.; Jones, N. Cooper; Pavlidis, I.; Wesley, A.; S. Zaman, Email Makes You Sweat: Examining Email Interruptions and Stress with Thermal Imaging Proceedings Article In: Proc. CHI, 2019. @inproceedings{akbar-2019-hci,
title = {Email Makes You Sweat: Examining Email Interruptions and Stress with Thermal Imaging},
author = {F. Akbar and A. E. Bayraktaroglu and G. Gao and T. Grover and G. Mark and K. Storer and D. R. Da Cunha Silva and R. Gutierrez-Osuna and Z. Wang and P. Buddharaju and N. Cooper Jones and I. Pavlidis and A. Wesley and S. Zaman, },
url = {https://psi.engr.tamu.edu/wp-content/uploads/2019/06/paper668.pdf
https://dl.acm.org/citation.cfm?id=3300898},
year = {2019},
date = {2019-05-04},
booktitle = {Proc. CHI},
journal = {Proc. CHI 2019},
keywords = {Electrodermal activity, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2018
|
Ahmed, B; Monroe, P; Hair, A; Tan, C-T; Gutierrez-Osuna, R; Ballard, K J Speech-driven mobile games for speech therapy: User experiences and feasibility Journal Article In: International Journal of Speech-Language Pathology , vol. 20, no. 6, pp. 644-658, 2018. @article{ahmed2018ijslp,
title = {Speech-driven mobile games for speech therapy: User experiences and feasibility},
author = {B Ahmed and P Monroe and A Hair and C-T Tan and R Gutierrez-Osuna and K J Ballard},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2019/06/ahmed-2018-ijslp.pdf
https://doi.org/10.1080/17549507.2018.1513562},
year = {2018},
date = {2018-10-30},
journal = {International Journal of Speech-Language Pathology },
volume = {20},
number = {6},
pages = {644-658},
keywords = {Childhood apraxia of speech, Games, Health, Speech},
pubstate = {published},
tppubtype = {article}
}
|
McKechnie, J.; Ahmed, B.; Gutierrez-Osuna, R.; Monroe, P.; McCabe, P.; Ballard, K. J. Automated speech analysis tools for children’s speech production: A systematic literature review Journal Article In: International Journal of Speech-Language Pathology, vol. 20, no. 6, pp. 583–598, 2018. @article{mcKechnie2018review,
title = {Automated speech analysis tools for children’s speech production: A systematic literature review},
author = {J. McKechnie and B. Ahmed and R. Gutierrez-Osuna and P. Monroe and P. McCabe and K. J. Ballard},
url = {https://doi.org/10.1080/17549507.2018.1477991
https://psi.engr.tamu.edu/wp-content/uploads/2019/06/mckechnie-2018-ijslp.pdf},
year = {2018},
date = {2018-09-02},
journal = {International Journal of Speech-Language Pathology},
volume = {20},
number = {6},
pages = {583–598},
keywords = {Childhood apraxia of speech, Health, Speech},
pubstate = {published},
tppubtype = {article}
}
|
Goel, N.; Chaspari, T.; Mortazavi, B. J.; Prioleau, T.; A. Sabharwal,; Gutierrez-Osuna, R. Knowledge-driven dictionaries for sparse representation of continuous glucose monitoring signals Proceedings Article In: Proc. EMBC, 2018. @inproceedings{chaspari2018cgm,
title = {Knowledge-driven dictionaries for sparse representation of continuous glucose monitoring signals},
author = {N. Goel and T. Chaspari and B. J. Mortazavi and T. Prioleau and A. Sabharwal, and R. Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/05/chaspari-2018-embc.pdf},
year = {2018},
date = {2018-07-17},
booktitle = {Proc. EMBC},
volume = {in press},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Hair, A; Monroe, P; Ahmed, B; Ballard, K J; Gutierrez-Osuna, R Apraxia World: A Speech Therapy Game for Children with Speech Sound Disorders Proceedings Article In: Proceedings of the 2018 Conference on Interaction Design and Children, ACM, 2018, ISBN: 978-1-4503-5152-2/18/06. @inproceedings{hair2018idc,
title = {Apraxia World: A Speech Therapy Game for Children with Speech Sound Disorders},
author = {A Hair and P Monroe and B Ahmed and K J Ballard and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/04/hair2018idc.pdf},
doi = {10.1145/3202185.3202733},
isbn = {978-1-4503-5152-2/18/06},
year = {2018},
date = {2018-06-19},
booktitle = {Proceedings of the 2018 Conference on Interaction Design and Children},
publisher = {ACM},
abstract = {This paper presents Apraxia World, a remote therapy tool for speech sound disorders that integrates speech exercises into an engaging platformer-style game. In Apraxia World, the player controls the avatar with virtual buttons/joystick, whereas speech input is associated with assets needed to advance from one level to the next. We tested performance and child preference of two strategies for delivering speech exercises: during each level, and after it. Most children indicated that doing exercises after completing each level was less disruptive and preferable to doing exercises scattered through the level. We also found that children liked having perceived control over the game (character appearance, exercise behavior). Our results indicate that (i) a familiar style of game successfully engages children, (ii) speech exercises function well when decoupled from game control, and (iii) children are willing to complete required speech exercises while playing a game they enjoy.},
keywords = {Childhood apraxia of speech, Health, Mobile computing, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
This paper presents Apraxia World, a remote therapy tool for speech sound disorders that integrates speech exercises into an engaging platformer-style game. In Apraxia World, the player controls the avatar with virtual buttons/joystick, whereas speech input is associated with assets needed to advance from one level to the next. We tested performance and child preference of two strategies for delivering speech exercises: during each level, and after it. Most children indicated that doing exercises after completing each level was less disruptive and preferable to doing exercises scattered through the level. We also found that children liked having perceived control over the game (character appearance, exercise behavior). Our results indicate that (i) a familiar style of game successfully engages children, (ii) speech exercises function well when decoupled from game control, and (iii) children are willing to complete required speech exercises while playing a game they enjoy. |
Chaspari, T.; Mortazavi, B.; Prioleau, T.; Sabharwal, A.; Gutierrez-Osuna, R. Sparse representation models of continuous glucose monitoring time-series Proceedings Article In: Proc. 5th International Conference on Wearable and Implantable Body Sensor Networks, 2018. @inproceedings{theodora2018bsn,
title = {Sparse representation models of continuous glucose monitoring time-series},
author = {T. Chaspari and B. Mortazavi and T. Prioleau and A. Sabharwal and R. Gutierrez-Osuna },
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/05/chaspari-2018-bsn.pdf},
year = {2018},
date = {2018-03-04},
booktitle = { Proc. 5th International Conference on Wearable and Implantable Body Sensor Networks},
keywords = {Chemical sensors, Continuous glucose monitors, Health, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Wang, Z; Parnandi, A; Gutierrez-Osuna, R BioPad: Leveraging off-the-Shelf Video Games for Stress Self-Regulation Journal Article In: IEEE Journal of Biomedical and Health Informatics, in press, 2018. @article{wang2018jbhi,
title = {BioPad: Leveraging off-the-Shelf Video Games for Stress Self-Regulation},
author = {Z Wang and A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/wang2018jbhi.pdf},
year = {2018},
date = {2018-01-01},
journal = {IEEE Journal of Biomedical and Health Informatics, in press},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
2017
|
Hair, A; Gutierrez-Osuna, R Deep Breaths: An Internally- and Externally-Paced Deep Breathing Guide Workshop Proc. 7th International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW), 2017. @workshop{hair2017acii,
title = {Deep Breaths: An Internally- and Externally-Paced Deep Breathing Guide},
author = {A Hair and R Gutierrez-Osuna },
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/hair2017acii.pdf},
year = {2017},
date = {2017-10-23},
booktitle = {Proc. 7th International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW)},
abstract = {Deep breathing is a simple and intuitive technique for reducing stress, but requires familiarity with breathing exercises and suitable breathing parameters. We present Deep Breaths, a mobile tool that allows users to experiment with various respiratory pacing signals in order to maximize relaxation. Deep Breaths provides a stationary (i.e., clock-based) pacing signal as well as an adaptive pacing signal that follows fluctuations in the user’s heart rate. Deep Breaths also provides real-time visualizations of various standard measures of relaxation. This demonstration aims to illustrate how our system can be used for relaxation training.},
keywords = {Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {workshop}
}
Deep breathing is a simple and intuitive technique for reducing stress, but requires familiarity with breathing exercises and suitable breathing parameters. We present Deep Breaths, a mobile tool that allows users to experiment with various respiratory pacing signals in order to maximize relaxation. Deep Breaths provides a stationary (i.e., clock-based) pacing signal as well as an adaptive pacing signal that follows fluctuations in the user’s heart rate. Deep Breaths also provides real-time visualizations of various standard measures of relaxation. This demonstration aims to illustrate how our system can be used for relaxation training. |
Parnandi, A; Gutierrez-Osuna, R Physiological modalities for relaxation skill transfer in biofeedback games Journal Article In: Journal of Biomedical and Health Informatics, vol. in press, 2017. @article{parnandi2017jbhi,
title = {Physiological modalities for relaxation skill transfer in biofeedback games},
author = {A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/avinash2017jbhi.pdf},
year = {2017},
date = {2017-03-01},
journal = {Journal of Biomedical and Health Informatics},
volume = {in press},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
2016
|
McKechnie, J; Ballard, K J; McCabe, P; Murray, E; Lan, T; Gutierrez-Osuna, R; Ahmed, B Influence of type of feedback on effect of tablet-based delivery of intensive speech therapy in children with Childhood Apraxia of Speech Proceedings Article In: Proceedings of the Motor Speech Conference, 2016. @inproceedings{mckechnie-2016-motorspeech,
title = {Influence of type of feedback on effect of tablet-based delivery of intensive speech therapy in children with Childhood Apraxia of Speech},
author = {J McKechnie and K J Ballard and P McCabe and E Murray and T Lan and R Gutierrez-Osuna and B Ahmed},
year = {2016},
date = {2016-03-03},
booktitle = {Proceedings of the Motor Speech Conference},
journal = {Motor Speech Conference},
keywords = {Childhood apraxia of speech, Games, Health, Mobile computing, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2015
|
Parnandi, A; Karappa, V; Lan, T; Shahin, M; McKechnie, J; Ballard, K; Ahmed, B; Gutierrez-Osuna, R Development of a remote therapy tool for childhood apraxia of speech Journal Article In: ACM Transactions on Accessible Computing, vol. 7, no. 3, pp. 10:1-10:23, 2015. @article{parnandi2015taccess,
title = {Development of a remote therapy tool for childhood apraxia of speech},
author = {A Parnandi and V Karappa and T Lan and M Shahin and J McKechnie and K Ballard and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/parnandi2015taccess.pdf},
year = {2015},
date = {2015-11-01},
journal = {ACM Transactions on Accessible Computing},
volume = {7},
number = {3},
pages = {10:1-10:23},
keywords = {Childhood apraxia of speech, Games, Health, Mobile computing, Speech},
pubstate = {published},
tppubtype = {article}
}
|
Ahmed, B; Ali, H; Choi, J; Gutierrez-Osuna, R ReBreathe: A calibration protocol that improves stress/relax classification by relabeling deep breathing relaxation exercises Journal Article In: IEEE Transactions on Affective Computing, vol. in press, 2015. @article{ahmed2015taffc,
title = {ReBreathe: A calibration protocol that improves stress/relax classification by relabeling deep breathing relaxation exercises},
author = {B Ahmed and H Ali and J Choi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/ahmed2015taffc.pdf},
year = {2015},
date = {2015-08-01},
journal = {IEEE Transactions on Affective Computing},
volume = {in press},
keywords = {Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Bhandari, R; Parnandi, A; Shipp, E; Ahmed, B; Gutierrez-Osuna, R Music-based respiratory biofeedback in visually-demanding tasks Proceedings Article In: 15th International Conference on New Interfaces for Musical Expression (NIME), 2015. @inproceedings{Bhandari2015nime,
title = {Music-based respiratory biofeedback in visually-demanding tasks},
author = {R Bhandari and A Parnandi and E Shipp and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/Bhandari2015nime.pdf},
year = {2015},
date = {2015-05-31},
urldate = {2015-05-31},
booktitle = {15th International Conference on New Interfaces for Musical Expression (NIME)},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Shahin, M; Ahmed, B; Parnandi, A; Karappa, V; McKechnie, J; Ballard, K; Gutierrez-Osuna, R Tabby Talks: an automated tool for the assessment of childhood apraxia of speech Journal Article In: Speech Communication, vol. in press, 2015. @article{shahin2015specom,
title = {Tabby Talks: an automated tool for the assessment of childhood apraxia of speech},
author = {M Shahin and B Ahmed and A Parnandi and V Karappa and J McKechnie and K Ballard and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/shahin2015specom.pdf},
year = {2015},
date = {2015-04-02},
urldate = {2015-04-02},
journal = {Speech Communication},
volume = {in press},
keywords = {Childhood apraxia of speech, Games, Health, Mobile computing, Speech},
pubstate = {published},
tppubtype = {article}
}
|
2014
|
Al-Rihawi, R; Ahmed, B; Gutierrez-Osuna, R Dodging Stress With A Personalized Biofeedback Game Proceedings Article In: Proc. CHI-PLAY, 2014. @inproceedings{rami2014chiplay,
title = {Dodging Stress With A Personalized Biofeedback Game},
author = {R Al-Rihawi and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/rami2014chiplay.pdf},
year = {2014},
date = {2014-10-19},
booktitle = {Proc. CHI-PLAY},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Lan, T; Aryal, S; Ahmed, B; Ballard, K; Gutierrez-Osuna, R Flappy Voice: An Interactive Game for Childhood Apraxia of Speech Therapy Proceedings Article In: Proc. CHI-PLAY, 2014. @inproceedings{lan2014chiplay,
title = {Flappy Voice: An Interactive Game for Childhood Apraxia of Speech Therapy},
author = {T Lan and S Aryal and B Ahmed and K Ballard and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/lan2014chiplay.pdf},
year = {2014},
date = {2014-10-19},
booktitle = {Proc. CHI-PLAY},
keywords = {Childhood apraxia of speech, Games, Health, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Shahin, M; Ahmed, B; McKechnie, J; Ballard, K; Gutierrez-Osuna, R A comparison of GMM-HMM and DNN-HMM based pronunciation verification techniques for use in the assessment of childhood apraxia of speech Proceedings Article In: Proc. Interspeech, 2014. @inproceedings{mostafa2014interspeech,
title = {A comparison of GMM-HMM and DNN-HMM based pronunciation verification techniques for use in the assessment of childhood apraxia of speech},
author = {M Shahin and B Ahmed and J McKechnie and K Ballard and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/mostafa2014interspeech.pdf},
year = {2014},
date = {2014-09-14},
booktitle = {Proc. Interspeech},
keywords = {Childhood apraxia of speech, Health, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
|
McKechnie, J; Ballard, K; McCabe, P; Gutierrez-Osuna, R; Karappa, V; Parnandi, A; Shahin, M; Murray, E; Ahmed, B Tablet-based delivery of intensive speech therapy in children with Childhood Apraxia of Speech - Pilot Phase Proceedings Article In: Speech Pathology Australia National Conference, 2014. @inproceedings{jacqui2013australiaSLPconference,
title = {Tablet-based delivery of intensive speech therapy in children with Childhood Apraxia of Speech - Pilot Phase},
author = {J McKechnie and K Ballard and P McCabe and R Gutierrez-Osuna and V Karappa and A Parnandi and M Shahin and E Murray and B Ahmed},
year = {2014},
date = {2014-05-14},
urldate = {2014-05-14},
booktitle = {Speech Pathology Australia National Conference},
keywords = {Games, Health, Speech},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Parnandi, A; Gutierrez-Osuna, R A Comparative Study of Game Mechanics and Control Laws for an Adaptive Physiological Game Journal Article In: Journal on Multimodal User Interfaces, 2014. @article{avinash2014jmui,
title = {A Comparative Study of Game Mechanics and Control Laws for an Adaptive Physiological Game},
author = {A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/avinash2014jmui.pdf},
year = {2014},
date = {2014-04-29},
journal = {Journal on Multimodal User Interfaces},
keywords = {Electrodermal activity, Games, Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
|
Harris, J; Vance, S; Fernandes, O; Parnandi, A; Gutierrez-Osuna, R Sonic Respiration: Controlling Respiration Rate Through Auditory Biofeedback Proceedings Article In: Proc. ACM CHI Conference on Human Factors in Computing Systems (CHI 2014) Works-in-Progress, 2014. @inproceedings{harris2014chi,
title = {Sonic Respiration: Controlling Respiration Rate Through Auditory Biofeedback},
author = {J Harris and S Vance and O Fernandes and A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/harris2014chi.pdf},
year = {2014},
date = {2014-04-26},
urldate = {2014-04-26},
booktitle = {Proc. ACM CHI Conference on Human Factors in Computing Systems (CHI 2014) Works-in-Progress},
volume = {in press},
keywords = {Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2013
|
Parnandi, A; Ahmed, B; Shipp, E; Gutierrez-Osuna, R Chill-Out: Relaxation training through respiratory biofeedback in a mobile casual game Conference Fifth International Conference on Mobile Computing, Applications and Services (MobiCASE 2013), 2013. @conference{avimobicase2013,
title = {Chill-Out: Relaxation training through respiratory biofeedback in a mobile casual game},
author = {A Parnandi and B Ahmed and E Shipp and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/avimobicase2013.pdf},
year = {2013},
date = {2013-11-07},
booktitle = {Fifth International Conference on Mobile Computing, Applications and Services (MobiCASE 2013)},
keywords = {Electrodermal activity, Games, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {conference}
}
|
Parnandi, A; Karappa, V; Son, Y; Shahin, M; McKechnie, J; Ballard, K; Ahmed, B; Gutierrez-Osuna, R Architecture of an automated therapy tool for childhood apraxia of speech Conference The 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS), 2013. @conference{avinashassets2013,
title = {Architecture of an automated therapy tool for childhood apraxia of speech},
author = {A Parnandi and V Karappa and Y Son and M Shahin and J McKechnie and K Ballard and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/avinashassets2013.pdf},
year = {2013},
date = {2013-10-21},
urldate = {2013-10-21},
booktitle = {The 15th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS)},
keywords = {Childhood apraxia of speech, Games, Health, Mobile computing, Speech},
pubstate = {published},
tppubtype = {conference}
}
|
Parnandi, A; Gutierrez-Osuna, R Contactless Measurement of Heart Rate Variability from Fluctuations in Pupillary Dilation Conference Humaine Association Conference on Affective Computing and Intelligent Interaction (ACII), 2013. @conference{avipupilacii,
title = {Contactless Measurement of Heart Rate Variability from Fluctuations in Pupillary Dilation},
author = {A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/avipupilacii.pdf},
year = {2013},
date = {2013-09-02},
booktitle = {Humaine Association Conference on Affective Computing and Intelligent Interaction (ACII)},
keywords = {Contactless sensing, Health, Heart rate variability, Stress},
pubstate = {published},
tppubtype = {conference}
}
|
Parnandi, A; Son, Y; Gutierrez-Osuna, R A Control-Theoretic Approach to Adaptive Physiological Games Conference Humaine Association Conference on Affective Computing and Intelligent Interaction (ACII), 2013. @conference{avigameacii,
title = {A Control-Theoretic Approach to Adaptive Physiological Games},
author = {A Parnandi and Y Son and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/avigameacii.pdf},
year = {2013},
date = {2013-09-02},
booktitle = {Humaine Association Conference on Affective Computing and Intelligent Interaction (ACII)},
keywords = {Electrodermal activity, Games, Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {conference}
}
|
2012
|
Parnandi, A; Gutierrez-Osuna, R Contactless Measurement of Heart Rate Variability from Pupillary Fluctuations Technical Report 2012. @techreport{parnandi2012techreport,
title = {Contactless Measurement of Heart Rate Variability from Pupillary Fluctuations},
author = {A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/parnandi2012techreport.pdf},
year = {2012},
date = {2012-12-04},
abstract = {The ability to measure a person’s physiological parameters in a contactless fashion without attaching electrodes to the skin has tremendous potential in making healthcare delivery more efficient. In this paper, we present a proof-of-concept method for measuring one such vital parameter, heart rate variability (HRV), in a contactless fashion from the spontaneous pupillary fluctuations. Pupillary measurements are done using a remote eye tracker for imaging and an integro-differential algorithm for the segmentation of the pupil-iris boundary. We estimate HRV from energy distribution in the low frequency (LF) (0.04 to 0.15 Hz) and high frequency (HF) (0.15 to 0.4 Hz) bands of the power spectrum of the pupillary fluctuations. In our study, we noted statistically significant correlation between the estimated HRV and the ground truth measures under a range of breathing conditions and under different illumination levels. The high degree of agreement evident in our results suggests that pupillary fluctuations obtained in a contactless fashion can be a reliable indicator of HRV.},
keywords = {Contactless sensing, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {techreport}
}
The ability to measure a person’s physiological parameters in a contactless fashion without attaching electrodes to the skin has tremendous potential in making healthcare delivery more efficient. In this paper, we present a proof-of-concept method for measuring one such vital parameter, heart rate variability (HRV), in a contactless fashion from the spontaneous pupillary fluctuations. Pupillary measurements are done using a remote eye tracker for imaging and an integro-differential algorithm for the segmentation of the pupil-iris boundary. We estimate HRV from energy distribution in the low frequency (LF) (0.04 to 0.15 Hz) and high frequency (HF) (0.15 to 0.4 Hz) bands of the power spectrum of the pupillary fluctuations. In our study, we noted statistically significant correlation between the estimated HRV and the ground truth measures under a range of breathing conditions and under different illumination levels. The high degree of agreement evident in our results suggests that pupillary fluctuations obtained in a contactless fashion can be a reliable indicator of HRV. |
Son, Y; Parnandi, A; Gutierrez-Osuna, R A Control-Theoretic Approach to Adaptive Physiological Games Technical Report 2012. @techreport{son2012techreport,
title = {A Control-Theoretic Approach to Adaptive Physiological Games},
author = {Y Son and A Parnandi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/son2012techreport.pdf},
year = {2012},
date = {2012-09-21},
abstract = {This paper presents an adaptive biofeedback videogame
that aims to maintain the player’s arousal level at an
optimum level by monitoring physiological signals and
manipulating game difficulty accordingly. We use concepts
from classical control theory to model the interaction
between human physiology and game difficulty during
game play. Based on this control model, we have developed
a real-time car-racing game with adaptive game mechanics.
Specifically, we utilized car speed, road visibility, and
steering jitter as three mechanisms to manipulate game
difficulty. We propose quantitative measures to characterize
the extent to which these three game adaptations can
manipulate the player’s arousal. For this purpose, we used
electrodermal activity (EDA) as a physiological correlate of
arousal. We have validated our approach by conducting
experimental trials with 20 subjects in both open-loop (no
feedback) and closed-loop (negative feedback) conditions.
Our results show statistically significant differences among
the three game mechanics in terms of their effectiveness.
Specifically, manipulating car speed provides higher
arousal levels than modulating road visibility or vehicle
steering. Finally, we discuss the theoretical and practical
implications of our approach},
keywords = {Electrodermal activity, Games, Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {techreport}
}
This paper presents an adaptive biofeedback videogame
that aims to maintain the player’s arousal level at an
optimum level by monitoring physiological signals and
manipulating game difficulty accordingly. We use concepts
from classical control theory to model the interaction
between human physiology and game difficulty during
game play. Based on this control model, we have developed
a real-time car-racing game with adaptive game mechanics.
Specifically, we utilized car speed, road visibility, and
steering jitter as three mechanisms to manipulate game
difficulty. We propose quantitative measures to characterize
the extent to which these three game adaptations can
manipulate the player’s arousal. For this purpose, we used
electrodermal activity (EDA) as a physiological correlate of
arousal. We have validated our approach by conducting
experimental trials with 20 subjects in both open-loop (no
feedback) and closed-loop (negative feedback) conditions.
Our results show statistically significant differences among
the three game mechanics in terms of their effectiveness.
Specifically, manipulating car speed provides higher
arousal levels than modulating road visibility or vehicle
steering. Finally, we discuss the theoretical and practical
implications of our approach |
Masood, K; Choi, J; Ahmed, B; Gutierrez-Osuna, R Consistency and Validity of Self-reporting Scores in Stress Measurement Surveys Conference 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), 2012. @conference{masood2012embs,
title = {Consistency and Validity of Self-reporting Scores in Stress Measurement Surveys},
author = {K Masood and J Choi and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/masood2012embs.pdf},
year = {2012},
date = {2012-09-01},
booktitle = {2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS)},
pages = {4895-4898},
abstract = {Stress has been attributed to physiological and psychological demands that exceed the natural regulatory capacity of a person. Chronic stress is not only a catalyst for diseases such as hypertension, diabetes, insomnia but may also lead to social problems such as marriage breakups, suicide and violence. Objective assessment of stress is difficult so self-reports are commonly used to indicate the severity of stress. However, empirical information on the validity of self-reports is limited. The present study investigated the authenticity and validity of different self-report surveys. An analysis, based on a three-pronged strategy, was performed on these surveys. It was concluded that although subjects are prone to systematic error in reporting, self-reports can provide a useful substitute for data modeling specifically in stress evaluation where other objective assessments such as determination of stress using only physiological response are difficult.},
keywords = {Health, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {conference}
}
Stress has been attributed to physiological and psychological demands that exceed the natural regulatory capacity of a person. Chronic stress is not only a catalyst for diseases such as hypertension, diabetes, insomnia but may also lead to social problems such as marriage breakups, suicide and violence. Objective assessment of stress is difficult so self-reports are commonly used to indicate the severity of stress. However, empirical information on the validity of self-reports is limited. The present study investigated the authenticity and validity of different self-report surveys. An analysis, based on a three-pronged strategy, was performed on these surveys. It was concluded that although subjects are prone to systematic error in reporting, self-reports can provide a useful substitute for data modeling specifically in stress evaluation where other objective assessments such as determination of stress using only physiological response are difficult. |
Parnandi, A; Son, Y; Shahin, M; Ahmed, B; Gutierrez-Osuna, R Architecture of an Automated Therapy Tool for Childhood Apraxia of Speech Technical Report 2012. @techreport{parnandi2012techreport-2,
title = {Architecture of an Automated Therapy Tool for Childhood Apraxia of Speech},
author = {A Parnandi and Y Son and M Shahin and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/parnandi2012techreport-2.pdf},
year = {2012},
date = {2012-08-21},
urldate = {2012-08-21},
abstract = {We present a multi-tier architecture for automating the administration of speech therapy to children suffering from apraxia of speech. This architecture follows a client-server model and facilitates task-oriented remote therapeutic training in home settings. The therapy regimen is remotely assigned to the child by a speech therapist based on a standardized protocol. We utilize tablet PCs to provide stimuli to the children and record their speech response. The speech data is then streamed to a back-end server running a specialized speech-processing module to identify errors and quantify the progress of the child. These automated results allow the therapist to closely monitor the performance of each child, provide relevant feedback, and adapt the training program as needed. Our proposed architecture can accommodate a variety of interaction modalities that can serve as a complement to traditional face-to-face speech practice. In this paper we describe the client-server architecture, the middleware tools upon which the system has been built, and the speechprocessing tools for automatically scoring the patients’ speech.},
keywords = {Games, Health, Mobile computing, Speech},
pubstate = {published},
tppubtype = {techreport}
}
We present a multi-tier architecture for automating the administration of speech therapy to children suffering from apraxia of speech. This architecture follows a client-server model and facilitates task-oriented remote therapeutic training in home settings. The therapy regimen is remotely assigned to the child by a speech therapist based on a standardized protocol. We utilize tablet PCs to provide stimuli to the children and record their speech response. The speech data is then streamed to a back-end server running a specialized speech-processing module to identify errors and quantify the progress of the child. These automated results allow the therapist to closely monitor the performance of each child, provide relevant feedback, and adapt the training program as needed. Our proposed architecture can accommodate a variety of interaction modalities that can serve as a complement to traditional face-to-face speech practice. In this paper we describe the client-server architecture, the middleware tools upon which the system has been built, and the speechprocessing tools for automatically scoring the patients’ speech. |
Alamudun, F; Choi, J; Gutierrez-Osuna, R; Khan, H; Ahmed, B Removal of Subject-Dependent and Activity-Dependent Variation in Physiological Measures of Stress Conference Proceedings of Pervasive Computing Technologies for Healthcare, 2012, ISBN: 978-1-936968-43-5. @conference{alamudun2012phealth,
title = {Removal of Subject-Dependent and Activity-Dependent Variation in Physiological Measures of Stress},
author = {F Alamudun and J Choi and R Gutierrez-Osuna and H Khan and B Ahmed},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/alamudun2012phealth.pdf},
isbn = {978-1-936968-43-5},
year = {2012},
date = {2012-05-21},
booktitle = {Proceedings of Pervasive Computing Technologies for Healthcare},
pages = {115},
abstract = {The ability to monitor stress levels in daily life can provide valuable information to patients and their caretakers, help identify potential stressors, determine appropriate interventions, and monitor their effectiveness. Wearable sensor technology makes it now possible to measure non-invasively a number of physiological correlates of stress, from skin conductance to heart rate variability. These measures, however, show large individual differences and are also correlated with the physical activity of the subject. In this paper, we propose two multivariate signal processing techniques to reduce the effect of both forms of interference. The first method is an unsupervised technique that removes any systematic variation that is orthogonal to the dependent variable, in this case physiological stress. In contrast, the second method is a supervised technique that first projects the data into a subspace that emphasizes these systematic variations, and then removes them from the data. The two methods were validated on an experimental dataset containing physiological recordings from multiple subjects performing physical and/or mental activities. When compared to z-score normalization, the standard method for removing individual differences, our methods can reduce stress prediction errors by as much as 50%.},
keywords = {Electrodermal activity, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {conference}
}
The ability to monitor stress levels in daily life can provide valuable information to patients and their caretakers, help identify potential stressors, determine appropriate interventions, and monitor their effectiveness. Wearable sensor technology makes it now possible to measure non-invasively a number of physiological correlates of stress, from skin conductance to heart rate variability. These measures, however, show large individual differences and are also correlated with the physical activity of the subject. In this paper, we propose two multivariate signal processing techniques to reduce the effect of both forms of interference. The first method is an unsupervised technique that removes any systematic variation that is orthogonal to the dependent variable, in this case physiological stress. In contrast, the second method is a supervised technique that first projects the data into a subspace that emphasizes these systematic variations, and then removes them from the data. The two methods were validated on an experimental dataset containing physiological recordings from multiple subjects performing physical and/or mental activities. When compared to z-score normalization, the standard method for removing individual differences, our methods can reduce stress prediction errors by as much as 50%. |
Choi, J; Ahmed, B; Gutierrez-Osuna, R Development and Evaluation of an Ambulatory Stress Monitor Based on Wearable Sensors Journal Article In: IEEE Transactions on Information Technology in Biomedicine, no. 99, pp. 279 - 286, 2012. @article{choi2012titb,
title = {Development and Evaluation of an Ambulatory Stress Monitor Based on Wearable Sensors},
author = {J Choi and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/choi2012titb.pdf},
year = {2012},
date = {2012-03-01},
journal = {IEEE Transactions on Information Technology in Biomedicine},
number = {99},
pages = {279 - 286},
publisher = {IEEE},
abstract = {Chronic stress is endemic to modern society. However, as it is unfeasible for physicians to continuously monitor stress levels, its diagnosis is nontrivial. Wireless body sensor networks offer opportunities to ubiquitously detect and monitor mental stress levels, enabling improved diagnosis, and early treatment. This article describes the development of a wearable sensor platform to monitor a number of physiological correlates of mental stress. We discuss tradeoffs in both system design and sensor selection to balance information content and wearability. Using experimental signals collected from the wearable sensor, we describe a selected number of physiological features that show good correlation with mental stress. In particular, we propose a new spectral feature that estimates the balance of the autonomic nervous system by combining information from the power spectral density of respiration and heart rate variability. We validate the effectiveness of our approach on a binary discrimination problem when subjects are placed under two psychophysiological conditions: mental stress and relaxation. When used in a logistic regression model, our feature set is able to discriminate between these two mental states with a success rate of 81% across subjects.},
keywords = {Electrodermal activity, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
Chronic stress is endemic to modern society. However, as it is unfeasible for physicians to continuously monitor stress levels, its diagnosis is nontrivial. Wireless body sensor networks offer opportunities to ubiquitously detect and monitor mental stress levels, enabling improved diagnosis, and early treatment. This article describes the development of a wearable sensor platform to monitor a number of physiological correlates of mental stress. We discuss tradeoffs in both system design and sensor selection to balance information content and wearability. Using experimental signals collected from the wearable sensor, we describe a selected number of physiological features that show good correlation with mental stress. In particular, we propose a new spectral feature that estimates the balance of the autonomic nervous system by combining information from the power spectral density of respiration and heart rate variability. We validate the effectiveness of our approach on a binary discrimination problem when subjects are placed under two psychophysiological conditions: mental stress and relaxation. When used in a logistic regression model, our feature set is able to discriminate between these two mental states with a success rate of 81% across subjects. |
2011
|
Choi, J; Gutierrez-Osuna, R Removal of respiratory influences from heart rate variability in stress monitoring Journal Article In: IEEE Sensors Journal, vol. 11, no. 11, pp. 2649-2656, 2011. @article{choi2011removal,
title = {Removal of respiratory influences from heart rate variability in stress monitoring},
author = {J Choi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/choi2011removal.pdf},
year = {2011},
date = {2011-01-01},
journal = {IEEE Sensors Journal},
volume = {11},
number = {11},
pages = {2649-2656},
publisher = {IEEE},
abstract = {This paper addresses a major weakness of traditional heart-rate-variability (HRV) analysis for the purpose of monitoring stress: sensitivity to respiratory influences. To address this issue, a linear system-identification model of the cardiorespiratory system using commercial heart rate monitors and respiratory sensors was constructed. Subtraction of respiratory driven fluctuations in heart rate leads to a residual signal where the effects of mental stress become more salient. We experimentally validated the effectiveness of this method on a binary discrimination problem with two conditions: mental stress of subjects performing cognitive tasks and a relaxation condition. In the process, we also propose a normalization method that can be used to compensate for ventilation differences between paced and spontaneous breathing. Our results suggest that, by separating respiration influences, the residual HRV has more discrimination power than traditional HRV analysis for the purpose of monitoring mental stress/load.},
keywords = {Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {article}
}
This paper addresses a major weakness of traditional heart-rate-variability (HRV) analysis for the purpose of monitoring stress: sensitivity to respiratory influences. To address this issue, a linear system-identification model of the cardiorespiratory system using commercial heart rate monitors and respiratory sensors was constructed. Subtraction of respiratory driven fluctuations in heart rate leads to a residual signal where the effects of mental stress become more salient. We experimentally validated the effectiveness of this method on a binary discrimination problem with two conditions: mental stress of subjects performing cognitive tasks and a relaxation condition. In the process, we also propose a normalization method that can be used to compensate for ventilation differences between paced and spontaneous breathing. Our results suggest that, by separating respiration influences, the residual HRV has more discrimination power than traditional HRV analysis for the purpose of monitoring mental stress/load. |
Shipman, F; Park, S I; Gutierrez-Osuna, R; Choi, J PerCon: Supporting the Management and Reuse of Wearable Sensor Data Technical Report 2011. @techreport{shipman2011percon,
title = {PerCon: Supporting the Management and Reuse of Wearable Sensor Data},
author = {F Shipman and S I Park and R Gutierrez-Osuna and J Choi},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/shipman2011percon.pdf},
year = {2011},
date = {2011-01-01},
abstract = {This paper describes the problem of managing wearable sensor data and the design of an environment to support this activity. We are engaged in studies collecting data from custom‐made and off‐the‐shelf wearable and mobile sensors to explore the impact of context and physiological state on cognitive performance. The data being collected has the potential to assess many potential hypotheses beyond the original hypothesis being explored. In order to achieve this potential, infrastructure is required to manage, access, preserve, and share the various types of digital objects recorded from individual research participants. As with many studies of individuals over time, there are a number of data streams correlated via timestamps for each participant. To manage this data we are developing PerCon. PerCon processes and integrates the individual datasets so as to be loosely coupled with the analysis techniques used in our first stage of research. In addition, PerCon provides services such as searching, indexing, browsing and visualization. PerCon’s APIs support access to and processing of the resources by user and researcher applications. A result of our activity is an initial representation of the relationships among the heterogeneous resources to facilitate their reuse. Longer term, this will be separated into domain‐independent and domaindependent ontologies of the data types and resources involved. The overall result is an architecture and initial instantiation for e‐Science and e‐Health digital libraries.},
keywords = {Health, Wearable sensors},
pubstate = {published},
tppubtype = {techreport}
}
This paper describes the problem of managing wearable sensor data and the design of an environment to support this activity. We are engaged in studies collecting data from custom‐made and off‐the‐shelf wearable and mobile sensors to explore the impact of context and physiological state on cognitive performance. The data being collected has the potential to assess many potential hypotheses beyond the original hypothesis being explored. In order to achieve this potential, infrastructure is required to manage, access, preserve, and share the various types of digital objects recorded from individual research participants. As with many studies of individuals over time, there are a number of data streams correlated via timestamps for each participant. To manage this data we are developing PerCon. PerCon processes and integrates the individual datasets so as to be loosely coupled with the analysis techniques used in our first stage of research. In addition, PerCon provides services such as searching, indexing, browsing and visualization. PerCon’s APIs support access to and processing of the resources by user and researcher applications. A result of our activity is an initial representation of the relationships among the heterogeneous resources to facilitate their reuse. Longer term, this will be separated into domain‐independent and domaindependent ontologies of the data types and resources involved. The overall result is an architecture and initial instantiation for e‐Science and e‐Health digital libraries. |
2010
|
Choi, J; Ahmed, B; Gutierrez-Osuna, R Ambulatory Stress Monitoring with Minimally-Invasive Wearable Sensors Technical Report 2010. @techreport{choi10techreport,
title = {Ambulatory Stress Monitoring with Minimally-Invasive Wearable Sensors},
author = {J Choi and B Ahmed and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/choi2010techreport.pdf},
year = {2010},
date = {2010-11-10},
abstract = {Chronic stress can have serious health consequences, and is a leading risk factor for heart diseases, diabetes, asthma and depression. This article presents a minimally-invasive and wireless wearable sensor platform that can be used to monitor a number of physiological variables known to correlate with stress. We discuss the system design and sensor selection, both of which were guided as a tradeoff between information content and wearability. The platform is thoroughly evaluated through a battery of tests that elicit mental workload and physical activity, as well as through subjective assessments of comfort. Our results indicate that the sensor system is responsive to three broad types of factors: mental workload, posture and physical activity. We also describe a system-identification method that improves detection of mental stress by removing respiratory influences on heart rate.},
keywords = {Electrodermal activity, Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {techreport}
}
Chronic stress can have serious health consequences, and is a leading risk factor for heart diseases, diabetes, asthma and depression. This article presents a minimally-invasive and wireless wearable sensor platform that can be used to monitor a number of physiological variables known to correlate with stress. We discuss the system design and sensor selection, both of which were guided as a tradeoff between information content and wearability. The platform is thoroughly evaluated through a battery of tests that elicit mental workload and physical activity, as well as through subjective assessments of comfort. Our results indicate that the sensor system is responsive to three broad types of factors: mental workload, posture and physical activity. We also describe a system-identification method that improves detection of mental stress by removing respiratory influences on heart rate. |
Choi, J; Gutierrez-Osuna, R Estimating mental stress using a wearable cardio-respiratory sensor Conference Proceedings of IEEE Sensors, IEEE 2010. @conference{choi2010sensorsc,
title = {Estimating mental stress using a wearable cardio-respiratory sensor},
author = {J Choi and R Gutierrez-Osuna},
url = {https://psi.engr.tamu.edu/wp-content/uploads/2018/01/choi2010sensorsc.pdf},
year = {2010},
date = {2010-01-01},
booktitle = {Proceedings of IEEE Sensors},
pages = {150--154},
organization = {IEEE},
abstract = {This article describes a signal-processing approach to detect mental stress using unobtrusive wearable sensors. The approach addresses a major weakness of traditional methods based on heart-rate-variability (HRV) analysis: sensitivity to respiratory influences. To address this issue, we build a linear model that predicts the effect of breathing on the autonomic nervous system activation, as measured through HRV. Subtraction of respiratory effects leads to a residual signal that provides better discrimination between mental stress and relaxation conditions than traditional HRV tachogram. The method is experimentally validated on a discrimination task with two psycho-physiological conditions: mental stress and relaxation. To illustrate the effectiveness of the method, we impose a pacing respiratory signal that interferes with the main spectral band of the sympathetic branch. Our results suggest that the HRV residual signal has more discrimination power than conventional HRV analysis in the presence of respiration interferences.},
keywords = {Health, Heart rate variability, Stress, Wearable sensors},
pubstate = {published},
tppubtype = {conference}
}
This article describes a signal-processing approach to detect mental stress using unobtrusive wearable sensors. The approach addresses a major weakness of traditional methods based on heart-rate-variability (HRV) analysis: sensitivity to respiratory influences. To address this issue, we build a linear model that predicts the effect of breathing on the autonomic nervous system activation, as measured through HRV. Subtraction of respiratory effects leads to a residual signal that provides better discrimination between mental stress and relaxation conditions than traditional HRV tachogram. The method is experimentally validated on a discrimination task with two psycho-physiological conditions: mental stress and relaxation. To illustrate the effectiveness of the method, we impose a pacing respiratory signal that interferes with the main spectral band of the sympathetic branch. Our results suggest that the HRV residual signal has more discrimination power than conventional HRV analysis in the presence of respiration interferences. |