Quantification of physiological disparities and task performance in stress and control conditions

Subhani, Ahmad Rauf and Xia, Likun and Malik, Aamir Saeed and Othman, Zahiruddin (2013) Quantification of physiological disparities and task performance in stress and control conditions. In: 35th Annual International Conference of the IEEE EMBS, July 3 - 5, 2013, Osaka, Japan.


Official URL: http://dx.doi.org/10.1109/EMBC.2013.6609937


In mental stress studies, cerebral activation and autonomic nervous system are important distinctly. This study aims to analyze disparities associated with scalp potential, which may have impact on autonomic activation of heart during mental stress. Ten healthy subjects participated in this study that performed arithmetic tasks in stress and control environment. Task difficulty was calculated from their correct responses. During the experiment, electroencephalogram (EEG) and electrocardiogram (ECG) signals were recorded concurrently. Sympathetic innervation of heart was estimated from heart rate (HR), which is extracted from the ECG. The value of theta Fz/alpha Pz was measured from EEG scalp potential. The results show a significant surge in the value of theta Fz/alpha Pz in stress as compared to baseline (p<;0.013) and control (p<;0.042). The results also present tachycardia while in stress as compared to baseline (p<;0.05). Task difficulty in stress is also considerably higher than control environment (p<;0.003).

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Signal processing in physiological systems, Time-frequency analysis of biosignals
Subjects:Q Science > Q Science (General)
R Medicine > R Medicine (General)
T Technology > T Technology (General)
Academic Subject One:Academic Department - Electrical And Electronics - Communications - Digital Communications - Digital Signal Processing
Departments / MOR / COE:Centre of Excellence > Center for Intelligent Signal and Imaging Research
Research Institutes > Institute for Health Analytics
ID Code:10829
Deposited By: Dr Aamir Saeed Malik
Deposited On:16 Dec 2013 23:48
Last Modified:16 Dec 2013 23:48

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