Vipassana meditation practitioners show different patterns of how sleep consolidates procedural memories compared to non-meditators. The study compared overnight memory retention in meditators and controls, finding that meditators exhibited distinct consolidation processes, suggesting that long-term meditation practice alters sleep-dependent memory processing.
Meditation experience alters how sleep supports memory consolidation. In a study of Vipassana meditation practitioners and meditation-naïve controls who napped in a laboratory, both groups improved similarly on a balance task after sleep, but the brain activity underlying that improvement differed. In meditators, task learning was linked to slow occipital sleep spindles and negatively linked to fast spindles, whereas in controls improvement was associated with increased REM sleep. Meditators also had fewer sleep spindles overall, especially in occipital regions. The findings suggest that long-term meditation practice may reorganize sleep-dependent memory processes and compensate for some memory functions of sleep.
Meditators have longer dreams with friendlier, more compassionate interactions and slightly more references to the body, but their dreams are no more lucid than those of non-meditators. Meditators did not incorporate a procedural learning task or the laboratory into their dreams more often than controls. Among control participants, incorporating the task or laboratory into REM/N2 dreams was linked to improved task performance, while incorporations at sleep onset were tied to slightly worse performance. No relationship between dream content and procedural task performance was found for meditators.