睡眠時の情報処理機能について(1) : レム睡眠時における聴覚刺激の受容特性(経営情報工学科)

概要

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In order to understand human information processing mechanism in the human brain during rapid eye movement (REM) sleep, the auditory stimulus was presented to the subject during the REM sleep. However, the human information processing mechanism remains unknown during REM sleep. The purpose of the present study was to investigate the extent of receptive gate, by using the auditory stimulus. The one healthy university student (aged 21 years) participated in this study. The night sleep was polygraphically recorded from mid night (0:00) to the morning (8:00). The continuous 3 nights were recorded for the natural sleep, and after that the 9 nights were recorded under the auditory stimulus condition in the 3 weeks. The auditory stimulus of 45dB and 70dB was presented during REM sleep through the earphone system. Trials for event related potentials (ERPs) were sorted on the basis of stimulus intensity and the presence or absence of a rapid eye movement. When REMs desynchronized the onset of the stimulus, N1 and P2 elicited. However, P2 was affected by the presence of REMs. Therefore, REMs might be a consequence of the receptive gate close of external stimulus.
2005-03-18