Fig. 4: EEG alpha-wave and entropy peaks.
From: The fatigue illusion: the physical effects of mindlessness
Alpha-wave peaks over eight task stages display periods of fatigue, and were observed during participants’ reports of FS and FP. Alpha-waves that are accompanied by low-entropy reflect alpha-wave stability, whereas alpha-waves that are accompanied by high-entropy display alpha-wave instability as participants fought fatigue. Stage 8 displays stable alertness as participants ended their cognitive task, suggesting that energy was not depleted during reports of FP.
