Recall of Dreams and the Probability of Stage 1-REM Sleep

Abstract
The self-reported recall of night dreams of 762 Ss when asked during the day was 37.5%. The Stage 1-REM state of sleep in the last hour of sleep was obtained for 32 Ss over 3 nights. The probability of awakening or being awakened from a Stage 1-REM state during the last hour of sleep was approximately 45%. Probability of recall when aroused from Stage 1-REM is 83%. The estimated probability of dream recall as a result of a Stage 1-REM morning awakening is almost identical with the self-reported probability (.45 × .83 = 37.4).

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