Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition

Prolonged periods of cognitive workload will cause mental fatigue, but objective, quantitative, and sensitive measurements that reflect long-term, stress-induced mental fatigue have yet to be elucidated. This study aims to apply a potential marker of Rényi entropy to investigate the mental fatigue c...

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Autores principales:	Han Zhang, Jingying Wang, Xinyi Geng, Chuantao Li, Shouyan Wang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	long-term high-level stress mental fatigue EEG Rényi wavelet entropy competition Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
Acceso en línea:	https://doaj.org/article/1a6c08b016a64ee1b84c2edcb0620f2d
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spelling	oai:doaj.org-article:1a6c08b016a64ee1b84c2edcb0620f2d2021-11-10T06:23:22ZObjective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition1662-516110.3389/fnhum.2021.733426https://doaj.org/article/1a6c08b016a64ee1b84c2edcb0620f2d2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fnhum.2021.733426/fullhttps://doaj.org/toc/1662-5161Prolonged periods of cognitive workload will cause mental fatigue, but objective, quantitative, and sensitive measurements that reflect long-term, stress-induced mental fatigue have yet to be elucidated. This study aims to apply a potential marker of Rényi entropy to investigate the mental fatigue changes in a long-term, high-level stress condition and compare three different instruments for assessment of mental fatigue: EEG, the oddball task, and self-scoring. We recruited nine individuals who participated in a 5-day intellectually challenging competition. The participants were assessed for mental fatigue each day of the competition using prefrontal cortex electroencephalogram (EEG). Reaction time in an oddball task and self-rated scoring were used comparatively to evaluate the performance of the EEG. Repeated measures ANOVA was utilized to analyze the differences among score, reaction time, and wavelet Rényi entropy. The results demonstrated that both wavelet Rényi entropy extracted from EEG and self-rated scoring revealed significant increases in mental fatigue during the 5 days of competition (P < 0.001). The reaction time of the oddball task did not show significant changes during the five-day competition (P = 0.066). Moreover, the wavelet Rényi entropy analysis of EEG showed greater sensitivity than the self-rated scoring and reaction time of the oddball task for measuring mental fatigue changes. In conclusion, this study shows that mental fatigue accumulates during long-term, high-level stress situations. The study also indicates that EEG wavelet Rényi entropy is an efficient metric to reflect the change of mental fatigue under a long-term stress condition and that EEG is a better method to assess long-term mental fatigue.Han ZhangJingying WangXinyi GengChuantao LiShouyan WangShouyan WangShouyan WangShouyan WangShouyan WangShouyan WangFrontiers Media S.A.articlelong-termhigh-level stressmental fatigueEEGRényi wavelet entropycompetitionNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571ENFrontiers in Human Neuroscience, Vol 15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	long-term high-level stress mental fatigue EEG Rényi wavelet entropy competition Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
spellingShingle	long-term high-level stress mental fatigue EEG Rényi wavelet entropy competition Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Han Zhang Jingying Wang Xinyi Geng Chuantao Li Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition
description	Prolonged periods of cognitive workload will cause mental fatigue, but objective, quantitative, and sensitive measurements that reflect long-term, stress-induced mental fatigue have yet to be elucidated. This study aims to apply a potential marker of Rényi entropy to investigate the mental fatigue changes in a long-term, high-level stress condition and compare three different instruments for assessment of mental fatigue: EEG, the oddball task, and self-scoring. We recruited nine individuals who participated in a 5-day intellectually challenging competition. The participants were assessed for mental fatigue each day of the competition using prefrontal cortex electroencephalogram (EEG). Reaction time in an oddball task and self-rated scoring were used comparatively to evaluate the performance of the EEG. Repeated measures ANOVA was utilized to analyze the differences among score, reaction time, and wavelet Rényi entropy. The results demonstrated that both wavelet Rényi entropy extracted from EEG and self-rated scoring revealed significant increases in mental fatigue during the 5 days of competition (P < 0.001). The reaction time of the oddball task did not show significant changes during the five-day competition (P = 0.066). Moreover, the wavelet Rényi entropy analysis of EEG showed greater sensitivity than the self-rated scoring and reaction time of the oddball task for measuring mental fatigue changes. In conclusion, this study shows that mental fatigue accumulates during long-term, high-level stress situations. The study also indicates that EEG wavelet Rényi entropy is an efficient metric to reflect the change of mental fatigue under a long-term stress condition and that EEG is a better method to assess long-term mental fatigue.
format	article
author	Han Zhang Jingying Wang Xinyi Geng Chuantao Li Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang
author_facet	Han Zhang Jingying Wang Xinyi Geng Chuantao Li Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang Shouyan Wang
author_sort	Han Zhang
title	Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition
title_short	Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition
title_full	Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition
title_fullStr	Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition
title_full_unstemmed	Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition
title_sort	objective assessments of mental fatigue during a continuous long-term stress condition
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/1a6c08b016a64ee1b84c2edcb0620f2d
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Objective Assessments of Mental Fatigue During a Continuous Long-Term Stress Condition

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