Habituation during Sleeping and Waking.

摘要

EEG and autonomic habituation were studied during sleep stages 2 and REM, and during awake. Repeated presentations of the same stimulus to the same Ss within sleep stages and when awake permitted evaluation of habituation between tone sets within stage 2, REM and awake, and from sleep to awake. Forty-six Ss were exposed to 800 Hz, 75 dB, 1- or 2-sec tones, presented in sets of 20 tones. During sleep, there was no habituation of the EEG response. Habituation occurred for both finger pulse response (FPR) and heart rate response (HRR) during stage 2, with no evidence of within-stage, between tone set habituation. No significant habituation occurred during REM for HRR or FPR. Evoked skin resistance responses were rare during both stage 2 and REM. In the awake state, HRR was unresponsive but all other variables showed habituation. Tones presented during the night had no effect on the awake response