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Modulating break types induces divergent low band EEG processes during post-break improvement: A power spectral analysis
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Modulating break types induces divergent low band EEG processes during post-break improvement: A power spectral analysis
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Journal Article
Modulating break types induces divergent low band EEG processes during post-break improvement: A power spectral analysis
2022
Overview
Conventional wisdom suggests mid-task rest as a potential approach to relieve time-on-task (TOT) effect, while accumulating evidence indicated that acute exercise might also effectively restore mental fatigue. However, few researches have explored the neural mechanism underlying these different break types and results were scattered. This study provided one of the first looks on how different types of fatigue-recovery break exerted influence on the cognitive processes, through evaluating the corresponding behavioral improvement and neural response (EEG power spectral) in sustained attention task. Specifically, 19 participants performed three sessions of psychomotor vigilance tasks (PVT), with one session including a continuous 30-min PVT while the other two sessions additionally inserted a 15-min mid-task cycling and rest break respectively. For behavioral performance, both types of break could restore objective vigilance transiently, while subjective feeling was only maintained after mid-task rest. Moreover, divergent patterns of EEG change were observed during post-break improvement. In details, relative theta decreased and delta increased immediately after mid-task exercise, while decreased delta was found near the end of rest-inserted task. Meanwhile, theta and delta could serve as neurological indicators to predict the reaction time change for exercise and rest intervention respectively. In sum, our findings provided novel evidences to demonstrate divergent neural patterns following mid-task exercise and rest intervention to counter TOT effects, which might lead to new insights into the nascent field of neuroergonomics for mental fatigue restoration.
Publisher
Frontiers Research Foundation
Subject
