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Abstract <p>In daytime sleep studies using a psychomotor test, 15 test subjects (out of 83) did not fall asleep during the entire experiment. The subjects alternated between pressing a button with their right and left hand 10 times each, while counting in their mind, lying down in a dark, soundproofed room with their eyes closed. However, despite the instructions (to press the buttons until they fell asleep) and the setting conducive to falling asleep, some subjects performed the test without any errors throughout the entire experiment (50 minutes). We calculated the variation functions on 5-minute EEG segments before the activity, at the beginning, in the middle, and at the end of the experiment. We identified the highest values in the theta and alpha1 ranges of the spectrum. We compared them pairwise from one time period to another. The increase in the alpha1 rhythm in the frontal EEG leads from the beginning to the middle of the activity and its generalized increase from the middle to the end point to the initial stages of the development of drowsiness. A slight increase in theta activity in the EEG indicates that the level of wakefulness remains relatively high. Studying the brain correlates that support monotonous work under conditions conducive to falling asleep helps to identify measures to counteract the negative effects that can impair the work’s effectiveness.</p>

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Neural Correlates of Brain Resistance to the Process of Falling Asleep during Monotonous Cognitive Activity

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • E. A. Cheremushkin,
  • E. O. Gandina,
  • I. A. Yakovenko

摘要

Abstract

In daytime sleep studies using a psychomotor test, 15 test subjects (out of 83) did not fall asleep during the entire experiment. The subjects alternated between pressing a button with their right and left hand 10 times each, while counting in their mind, lying down in a dark, soundproofed room with their eyes closed. However, despite the instructions (to press the buttons until they fell asleep) and the setting conducive to falling asleep, some subjects performed the test without any errors throughout the entire experiment (50 minutes). We calculated the variation functions on 5-minute EEG segments before the activity, at the beginning, in the middle, and at the end of the experiment. We identified the highest values in the theta and alpha1 ranges of the spectrum. We compared them pairwise from one time period to another. The increase in the alpha1 rhythm in the frontal EEG leads from the beginning to the middle of the activity and its generalized increase from the middle to the end point to the initial stages of the development of drowsiness. A slight increase in theta activity in the EEG indicates that the level of wakefulness remains relatively high. Studying the brain correlates that support monotonous work under conditions conducive to falling asleep helps to identify measures to counteract the negative effects that can impair the work’s effectiveness.