Our Cortisol Pulsatile Control Research Featured on Frontiers Homepage
Peer-Reviewed Journal and Conference Papers
Amin M.R., and Faghih R.T., “Sparse Deconvolution of Electrodermal Activity via Continuous-Time System Identification,” IEEE Transactions on Biomedical Engineering, 2019.
This paper proposes a convex optimization scheme for deconvolution to overcome the non-convexity challenge in system parameter estimation of electrodermal activity. The method is proposed based on the continuous-system identification with modulating function technique with a novel adaptive frequency band selection method. (supplementary_info)
Amin M.R., and Faghih R.T., “Inferring Autonomic Nervous System Stimulation from Hand and Foot Skin Conductance Measurements,” Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, 2018.
This paper proposes a state-space model relating skin conductance signals from different locations of the body with a single neural stimuli input from the autonomic nervous system. It also provides a concurrent deconvolution algorithm to recover the neural stimuli from the concurrent recordings of skin conductance data from hand and foot. The deconvolution results can be used as observations to decode mental stress.
Wickramasuriya D.S., Qi C., and Faghih R.T., “A State-Space Approach for Detecting Stress from Electrodermal Activity,” the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Honolulu, HI, 2018. [Video]
Faghih, R.T. “From Physiological Signals to Pulsatile Dynamics: A Sparse System Identification Approach,” In Dynamic Neuroscience, p. 239-265. Springer, Cham, 2018.
Vargas I., Vgontzas A., Abelson J.L., Faghih R.T., Morales K.H., Perlis M.L., “Altered Ultradian Cortisol Rhythmicity as a Potential Neurobiologic Substrate for Chronic Insomnia,” Sleep Medicine Reviews, 2018.
Wickramasuriya D.S., and Faghih R.T., “Online and Offline Anger Detection via Electromyography Analysis,” the IEEE-NIH Special Topics Conference on Healthcare Innovations and Point-of-Care Technologies, Bethesda, MD, 2017. [PDF] [Poster]
Faghih R.T., Styer A.K., and Brown E.N., “Automated Ovarian Follicular Monitoring: A Novel Real-time Approach,” the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Seogwipo, South Korea, p. 632-635, 2017.
Faghih R.T., Dahleh M.A., Adler G., Klerman E., and Brown E.N., “Quantifying Pituitary Adrenal Dynamics: Deconvolution of Concurrent Cortisol and Adrenocorticotropic Hormone Data by Compressed Sensing,” IEEE Transactions on Biomedical Engineering, 62(10): 2379-2388, 2015. [supplementary information]
Faghih R.T., Dahleh M.A., and Brown E.N., “An Optimization Formulation for Characterization of Pulsatile Cortisol Secretion,” Frontiers in Neuroscience, 9, 228, 2015 (Featured on Frontiers homepage from August 27, 2015 to September 2, 2015).
Faghih R.T., Stokes, P., Marin M.F., Zsido R., Zorowitz S., Rosenbaum B., Song H., Milad R., Dougherty D., Eskandar E., Widge A., Brown E.N., Barbieri R., “Characterization of Fear Conditioning and Fear Extinction by Analysis of Electrodermal Activity,” the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Milan, Italy, p. 7814-7818, 2015.
Deng X., Faghih R.T., Barbieri R., Paulk A.C., Asaad W., Brown E.N., Dougherty D., Widge A., Eskandar E., Eden U, “Estimating a Dynamic State to Relate Neural Spiking Activity to Behavioral Signals during Cognitive Tasks,” the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Milan, Italy, p.7808-7813, 2015.
Faghih R.T., Dahleh M.A., Adler G., Klerman E., and Brown E.N., “Deconvolution of Serum Cortisol Levels by Using Compressed Sensing,”PLoS ONE 9(1): e85204. doi:10.1371/journal.pone.0085204, January 2014.
Faghih R.T., Savla K., Dahleh M.A., and Brown E.N., “Broad Range of Neural Dynamics from a Time-Varying FitzHugh-Nagumo Model and Its Spiking Threshold Estimation,” IEEE Transactions on Biomedical Engineering, Vol. 59, No. 3, pages 816-823, 2012. [Example Simulink Block]
Faghih R.T., Savla K., Dahleh M.A., and Brown E.N., “A Feedback Control Model for Cortisol Secretion.” In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Boston, MA, p.716-719, 2011.
Faghih R.T., Savla K., Dahleh M.A., and Brown E.N., “The FitzHugh-Nagumo Model: Firing Modes with Time Varying Parameters and Parameter Estimation,” In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Buenos Aires, Argentina, p. 4116-4119, 2010.
Antonsen T.M., Faghih R.T., Girvan M., Ott E., and Platig J., “External Periodic Driving of Large Systems of Globally Coupled Phase Oscillators,” Chaos, An Interdisciplinary Journal of Nonlinear Science. 2008;18(3):037112.
Faghih R.T., Wearable Machine Interface System for Tracking and Controlling Mental Stress Related Brain Dynamics using Wrist-Worn Wearable Devices, 2018. US Patent App. 62/614,070.
Faghih R.T., Styer A. K., Brown, E. N. “System and Method for Automated Ovarian Follicular Monitoring,” International Patent Application No.: PCT/US2017/041111.
Faghih R.T., Brown E.N., Dahleh M.A. “System and Method for Neuroendocrine Control,” U.S. Patent Application No. 15/170,900.