Precise Conservation of NREM Period 1 (NREMP1) Delta Across Naps and Nocturnal Sleep: Implications for REM Latency and NREM/REM Alternation
Open Access
- 1 September 1992
- journal article
- Published by Oxford University Press (OUP) in Sleep
- Vol. 15 (5) , 400-403
- https://doi.org/10.1093/sleep/15.5.400
Abstract
The delta integrated amplitude (DIA) in nonrapid eye movement period 1 (NREMP1) of daytime naps was precisely subtracted from the NREMP 1s of ensuing nocturnal sleep, indicating that the brain can retain a record of DIA expressed in sleep episodes initiated 12.5 and 8.5 hours before nocturnal sleep onset. The DIA subtraction was primarily accomplished by reduced NREMP 1 duration [earlier rapid eye movement (REM) onset], suggesting that the timing of REM period 1 (REMP1) onset is controlled by delta need. This result is consistent with the hypothesis that REM sleep occurs when a stimulus for NREM has been partially depleted.Keywords
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