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A study of the interrupted REM episode
1Institutions Universitaire Psychiatriques de Genève, Chêne-Bourg, Switzerland.
Physiology & Behavior
|December 1, 1991
Summary
The 15-minute rule for REM sleep interruptions is valid, and extending it to 25 minutes is unnecessary. Interrupted REM sleep episodes show changes throughout the night, reflecting REM sleep pressure.
Area of Science:
- Neuroscience
- Sleep Medicine
- Chronobiology
Background:
- Defining the end of Rapid Eye Movement (REM) sleep episodes is crucial for sleep research.
- Current debate exists regarding the maximum allowable duration for brief interruptions within a REM sleep episode.
Purpose of the Study:
- To investigate the validity of the 15-minute empirical rule for REM sleep interruption duration.
- To determine if extending this rule to 25 minutes is necessary, as suggested by recent research.
- To analyze the temporal evolution and phenomenology of interrupted REM sleep episodes.
Main Methods:
- Inter-REM interval analysis was performed on individual REM cycles.
- The time-of-night effect was considered in the analysis.
- Phenomenological examination of interrupted REM sleep episodes was conducted.
Main Results:
- Results indicate no need to alter the established 15-minute rule for REM sleep interruptions.
- Measurements ignoring the time-of-night effect can be misleading.
- A high proportion of interrupted REM sleep episodes were observed in healthy adults.
Conclusions:
- The 15-minute rule for REM sleep interruptions remains appropriate.
- Interrupted REM sleep episodes exhibit significant temporal changes, shifting from slow-wave sleep to wakefulness later in the night.
- These interruptions may reflect REM sleep pressure interacting with other sleep stages.