Changes of physiological and behavioral indices, and Occurrence of subjective sleep experience in sleep onset period

Abstract

To investigate temporal changes of EEG, EOG, and behavioral indices and the correlation among them during the sleep onset period, 15 university students were requested to nap at will while trying to memorize the content of verbal stimuli and pressing a button in response to each stimulus. After awakening, Ss were asked to recall the content of the stimuli. A S's first failure to recall was defined as the onset of subjective sleep. The results showed a positive correlation between the percentage of alpha wave (A%) and the percentage of motor response (MR%) and a negative correlation between MR% and the rsponse time (RT), and between A% and RT. The temporal changes in A% and MR% showed remarkable declines immediately before and after the onset of subjective sleep. The evidence suggests that EEG, EOG and behavioral changes strongly correlate with the onset of subjective sleep. (English abstract) (PsycInfo Database Record (c) 2021 APA, all rights reserved)