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REM sleep, naps, and depression

D J Kupfer, J C Gillin, P A Coble

    Psychiatry Research
    |October 1, 1981
    PubMed
    Summary
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    Depression is linked to abnormal rapid eye movement (REM) sleep, with similar REM latencies found in daytime naps and nighttime sleep. Morning naps showed a higher propensity for REM sleep in depressed patients.

    Area of Science:

    • Neuroscience
    • Sleep Medicine
    • Psychiatry

    Background:

    • Rapid eye movement (REM) sleep abnormalities are a known feature of depression.
    • Comparative studies investigating daytime naps versus nighttime sleep in depression are of continued interest.

    Purpose of the Study:

    • To compare REM sleep characteristics during daytime naps and nighttime sleep in depressed patients.
    • To investigate the propensity for REM sleep across different sleep periods.

    Main Methods:

    • A study was conducted on a group of 15 depressed patients.
    • REM latency and propensity for REM sleep were measured during morning naps, afternoon naps, and early nocturnal sleep.

    Main Results:

    • REM latencies were similar across morning naps, afternoon naps, and nighttime sleep, consistent with shortened REM onset in depression.

    Related Experiment Videos

  • The propensity for REM sleep was greater in the morning nap compared to the afternoon nap and early nocturnal sleep.
  • Data suggest that patients who respond to tricyclic antidepressant treatment may be poor sleepers during daytime naps.

    • Conclusions:

    • Daytime naps exhibit REM sleep patterns similar to nighttime sleep in depressed individuals.
    • Morning naps may have a higher REM sleep propensity than afternoon naps or early night sleep.
    • Poor daytime napping sleep quality could be a predictor of treatment response in depression.