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Related Experiment Videos

[Postural activity--especially awaking from REM sleep].

M Sugawara

    No to Shinkei = Brain and Nerve
    |June 1, 1984
    PubMed
    Summary

    Body sway increases significantly after awakening from sleep, particularly from stage-4 and REM sleep. This study quantizes rhythmic body sway patterns using a statograph, revealing distinct post-awakening equilibrium changes.

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    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2013

    Area of Science:

    • Neuroscience
    • Human Physiology
    • Biomechanics

    Context:

    • Previous research indicated increased body sway and high-frequency trajectory components upon awakening from NREM sleep.
    • Rhythmic body sway was frequently observed in subjects after awakening from REM sleep.

    Purpose:

    • To describe and quantify rhythmic body sway phenomena in healthy males after awakening from different sleep stages.
    • To analyze the frequency components of body sway trajectories using Fast Fourier Transformation.

    Summary:

    • Nine healthy males were awakened from rest, stage-4, REM, and stage-2 sleep and stood on a statograph for 60 seconds with eyes closed.
    • Body sway was recorded, and anterior-posterior and lateral components were analyzed using Fast Fourier Transformation.
    • Total body sway trajectory lengths varied significantly, with the longest recorded after awakening from stage-4 sleep (1311 ± 220 mm).

    Impact:

    • Provides quantitative data on post-awakening equilibrium control across different sleep stages.
    • Highlights potential differences in neurological recovery and motor control following REM versus NREM sleep.
    • Establishes a baseline for further research into sleep-related postural instability and its implications.

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