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EEG Based Evaluation of Examination Stress and Test Anxiety Among College Students - 20/09/22

Doi : 10.1016/j.irbm.2021.06.011 
V.G. Rajendran a, S. Jayalalitha b, K. Adalarasu c,
a Department of ECE, School of EEE, SASTRA Deemed to be University, SRC, Kumbakonam, Tamil Nadu, India 
b SASTRA Deemed to be University, Thanjavur, Tamil Nadu, India 
c Department of EIE, SASTRA Deemed to be University, Thanjavur, Tamil Nadu, India 

Corresponding author.

Graphical abstract

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Highlights

Assessed cognitive stress among college students during the examination.
Male students were highly stressed as compared to female students before examination.
After examination, male students show better involvement in a mental task than female.

Le texte complet de cet article est disponible en PDF.

Abstract

Background

Adolescence is a crucial chapter in life and the presence of stress, depression, and anxiety at this stage is a great concern. Prolonged stress is one of the risk factors that may induce suicidal thoughts, destructive ideation, abuse of alcohol, and drugs in adulthood. Based on a record from National Crime Records Bureau, In India over 2320 children were committed suicide per year because of failure in examinations. This raised number implies the severity of this issue and its major impact on society.

Objectives

The main objective of this paper is to analyze the cognitive stress in students during examination period using EEG biomarkers.

Methods and Results

EEG signal was acquired in two different test conditions such as before examination with 12 minutes and after examination with 3 minutes from 14 subjects with eight electrodes located using wireless Enobio device (Neuro electrics) with 10-20 international lead system. The three brain waves such as theta, alpha, beta relative band energies were considered, and EEG band ratios such as heart rate, neural activity, arousal index, vigilance index and cognitive performance attentional resource index extracted between before and after examination condition using db4 wavelet family with 6 level decomposition. The statistical results suggest that after examination the relative sub-band energies α, β, and θ were decreased significantly (p < 0.05) as compared to before examination. Also, the EEG band ratio such as heart rate and vigilance index shows significant (p < 0.05) decrease after the examination as compared to before examination. It was found that there was a significant (p < 0.05) rise in the arousal index, Cognitive performance attentional resource index (CPARI), and neural activity after the examination as compared to before examination.

Conclusion

The experimental results found that the memory and concentration were high before examination, which concludes that adolescence group examination stress was high before examination period as compared to after examination. In the case of gender group comparison, theta energy band for male students was found high compared to female students in before examination state such that it concludes that male students were highly stressed (before examination) than female students. Overall, our results suggest that after examination male students with lower heart rate index than female students which implies the male students control their stress levels as compared to females in the same stress situation.

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Keywords : Electroencephalogram (EEG), Relative sub band energy, Vigilance index, Arousal index, Cognitive performance attentional resource index (CPARI)


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Vol 43 - N° 5

P. 349-361 - octobre 2022 Retour au numéro
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