Stress assessment based on EEG univariate features and functional connectivity measures
Por:
Alonso, JF, Romero, S, Ballester, MR, Antonijoan, RM, Mananas, MA
Publicada:
1 jul 2015
Resumen:
The biological response to stress originates in the brain but involves different biochemical and physiological effects. Many common clinical methods to assess stress are based on the presence of specific hormones and on features extracted from different signals, including electrocardiogram, blood pressure, skin temperature, or galvanic skin response. The aim of this paper was to assess stress using EEG-based variables obtained from univariate analysis and functional connectivity evaluation. Two different stressors, the Stroop test and sleep deprivation, were applied to 30 volunteers to find common EEG patterns related to stress effects. Results showed a decrease of the high alpha power (11 to 12 Hz), an increase in the high beta band (23 to 36 Hz, considered a busy brain indicator), and a decrease in the approximate entropy. Moreover, connectivity showed that the high beta coherence and the interhemispheric nonlinear couplings, measured by the cross mutual information function, increased significantly for both stressors, suggesting that useful stress indexes may be obtained from EEG-based features.
Filiaciones:
Alonso, JF:
Univ Politecn Cataluna, Biomed Engn Res Ctr, Dept Automat Control ESAII, Barcelona, Spain
UPC, Barcelona Coll Ind Engn EUETIB, Barcelona, Spain
Biomed Res Networking Ctr Bioengn Biomat & Nanome, Vitoria, Spain
Romero, S:
Univ Politecn Cataluna, Biomed Engn Res Ctr, Dept Automat Control ESAII, Barcelona, Spain
Biomed Res Networking Ctr Bioengn Biomat & Nanome, Vitoria, Spain
Ballester, MR:
Drug Res Ctr CIM, Inst Biomed Res IIB, RI, Barcelona, Spain
Hosp Santa Creu & Sant Pau, Barcelona, Spain
Univ Autonoma Barcelona, Dept Pharmacol & Therapeut, E-08193 Barcelona, Spain
Antonijoan, RM:
Drug Res Ctr CIM, Inst Biomed Res IIB, RI, Barcelona, Spain
Hosp Santa Creu & Sant Pau, Barcelona, Spain
Univ Autonoma Barcelona, Dept Pharmacol & Therapeut, E-08193 Barcelona, Spain
Biomed Res Networking Ctr Mental Hlth CIBERSAM, Vitoria, Spain
Mananas, MA:
Univ Politecn Cataluna, Biomed Engn Res Ctr, Dept Automat Control ESAII, Barcelona, Spain
UPC, Barcelona Coll Ind Engn EUETIB, Barcelona, Spain
Biomed Res Networking Ctr Bioengn Biomat & Nanome, Vitoria, Spain
Open Access
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