Neural indicators of sleep loss and sleep propensity in male military trainees: Insights from dry-electrode EEG-An exploratory study.

IF 2.2 Q3 PHYSIOLOGY
Jazmin Morrone, Sarah Coakley, Sam Blacker, Stephen Myers, Paul Hough, Christopher Vine, Tessa Maroni, Neil Stanley, Shona Halson, Andrew Siddall, Stephen Patterson, Martin Jones, Kieran Chillingsworth, Charles R Pedlar
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Abstract

This study examined the impact of reduced sleep on electroencephalogram (EEG) activity during cognitive tasks in Military Clearance Diver trainees using a novel dry-electrode EEG system. Seven male participants underwent two 5-day periods: a baseline and a "live-in" phase with increased workload and reduced sleep (5.4 ± 0.1 vs. 7.4 ± 0.7 h). EEG was recorded daily in the early morning (am) and late afternoon (pm) during a Psychomotor Vigilance Test (PVT), two oculography tests (am: n = 4; pm: n = 3), and 2 min of eyes-closed rest. Significant increases in theta (t (29) = 2.308, p = 0.028, d = 0.421) and alpha (t (29) = 2.124, p = 0.042, d = 0.388) power spectrum densities were observed in the "live-in" phase during the PVT. These findings align with increased lower frequency activity over time awake, reflecting heightened sleep propensity. Sleep loss was further confirmed by declining Odds Ratio Product (ORP) values. This study demonstrates the feasibility of dry-electrode EEG in detecting fatigue-related neural changes and highlights the potential of ORP as a quantifiable fatigue marker. These insights may inform operational settings, such as military diver performance monitoring and fatigue management strategies.

男性军事受训人员睡眠缺失和睡眠倾向的神经指标:来自干电极脑电图的见解-一项探索性研究。
本研究使用一种新型干电极脑电图系统研究了睡眠减少对军事清场潜水员学员认知任务中脑电图活动的影响。7名男性参与者经历了两个为期5天的阶段:基线阶段和“住家”阶段,工作量增加,睡眠减少(5.4±0.1小时vs. 7.4±0.7小时)。在每天清晨(上午)和下午晚些时候(下午)的精神运动警觉性测试(PVT)期间记录脑电图,两次眼部检查(上午:n = 4;Pm: n = 3),闭眼休息2分钟。在ppt“同居”阶段,观察到theta (t (29) = 2.308, p = 0.028, d = 0.421)和alpha (t (29) = 2.124, p = 0.042, d = 0.388)功率谱密度显著增加。这些发现与清醒时低频活动增加相一致,反映出睡眠倾向增强。优势比乘积(ORP)值的下降进一步证实了睡眠不足。本研究证明了干电极脑电图检测疲劳相关神经变化的可行性,并强调了ORP作为可量化疲劳标志物的潜力。这些见解可以为操作设置提供信息,例如军用潜水员的性能监测和疲劳管理策略。
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来源期刊
Physiological Reports
Physiological Reports PHYSIOLOGY-
CiteScore
4.20
自引率
4.00%
发文量
374
审稿时长
9 weeks
期刊介绍: Physiological Reports is an online only, open access journal that will publish peer reviewed research across all areas of basic, translational, and clinical physiology and allied disciplines. Physiological Reports is a collaboration between The Physiological Society and the American Physiological Society, and is therefore in a unique position to serve the international physiology community through quick time to publication while upholding a quality standard of sound research that constitutes a useful contribution to the field.
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