Altered ultradian cortisol rhythmicity as a potential neurobiologic substrate for chronic insomnia

I Vargas, AN Vgontzas, JL Abelson, RT Faghih… - Sleep medicine …, 2018 - Elsevier
Chronic insomnia is highly prevalent and associated with significant morbidity (ie, confers
risk for multiple psychiatric and medical disorders, such as depression and hypertension) …

Pathophysiology linking depression and type 2 diabetes: psychotherapy, physical exercise, and fecal microbiome transplantation as damage control

R Subba, R Sandhir, SP Singh… - European Journal of …, 2021 - Wiley Online Library
Diabetes increases the likelihood of developing depression and vice versa. Research on
this bidirectional association has somewhat managed to delineate the interplay among …

Physiological characterization of electrodermal activity enables scalable near real-time autonomic nervous system activation inference

R Amin, RT Faghih - PLoS computational biology, 2022 - journals.plos.org
Electrodermal activities (EDA) are any electrical phxenomena observed on the skin. Skin
conductance (SC), a measure of EDA, shows fluctuations due to autonomic nervous system …

Identification of sympathetic nervous system activation from skin conductance: A sparse decomposition approach with physiological priors

MR Amin, RT Faghih - IEEE Transactions on Biomedical …, 2020 - ieeexplore.ieee.org
Objective: Sweat secretions lead to variations in skin conductance (SC) signal. The relatively
fast variation of SC, called the phasic component, reflects sympathetic nervous system …

Sparse deconvolution of electrodermal activity via continuous-time system identification

MR Amin, RT Faghih - IEEE Transactions on Biomedical …, 2019 - ieeexplore.ieee.org
Objective: Electrodermal activity (EDA) indicates different eccrine sweat gland activity
caused by the stimulation of the autonomic nervous system. Recovering the number …

Skin conductance as a viable alternative for closing the deep brain stimulation loop in neuropsychiatric disorders

DS Wickramasuriya, MR Amin, RT Faghih - Frontiers in neuroscience, 2019 - frontiersin.org
Markers from local field potentials, neurochemicals, skin conductance, and hormone
concentrations have been proposed as a means of closing the loop in Deep Brain …

A Bayesian filtering approach for tracking sympathetic arousal and cortisol-related energy from marked point process and continuous-valued observations

DS Wickramasuriya, S Khazaei, R Kiani… - IEEE Access, 2023 - ieeexplore.ieee.org
Multiple state variables governed by internal processes within the human body remain
unobserved. On a number of occasions, these states are linked to point process bioelectric …

Closed-loop cognitive stress regulation using fuzzy control in wearable-machine interface architectures

HF Azgomi, I Cajigas, RT Faghih - IEEE Access, 2021 - ieeexplore.ieee.org
Keeping cognitive stress at a healthy range can improve the overall quality of life: helping
subjects to decrease their high levels of arousal, which will make them relaxed, and elevate …

Tonic and phasic decomposition of skin conductance data: A generalized-cross-validation-based block coordinate descent approach

MR Amin, RT Faghih - … Conference of the IEEE Engineering in …, 2019 - ieeexplore.ieee.org
Salty sweat secretions in the epidermis change the skin's electrical activity resulting in the
measured skin conductance signal. While the relatively fast variation of skin conductance (ie …

Hybrid decoders for marked point process observations and external influences

DS Wickramasuriya, LJ Crofford… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Objective: Internal physiological processes govern multiple state variables within the human
body. Estimating these from point process-type bioelectric and biochemical observations is a …