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Postural control, attention and sleep deprivation

A Schlesinger1, M S Redfern, R E Dahl

  • 1School of Medicine, University of Pittsburgh, PA 15213, USA.

Neuroreport
|May 20, 1998
PubMed
Summary
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Sleep deprivation impairs postural control, significantly increasing body sway during tasks requiring reaction inhibition. This effect was observed across all tested postural stability conditions.

Area of Science:

  • Neuroscience
  • Human Physiology
  • Sleep Research

Background:

  • Postural control is crucial for daily activities.
  • Sleep deprivation is known to affect cognitive and motor functions.
  • The impact of sleep loss on postural control under varying cognitive loads requires further investigation.

Purpose of the Study:

  • To examine the effects of sleep deprivation on postural control.
  • To assess postural sway during different information-processing tasks.
  • To determine if postural control deficits worsen with increased task difficulty after sleep loss.

Main Methods:

  • Five healthy participants underwent postural sway measurements using a force platform.
  • Tasks included a simple reaction time task (SRT), an inhibitory reaction time task (IRT), and no task.

Related Experiment Videos

  • Postural stability was assessed under three conditions: fixed, sway-referenced, and sway-referenced with visual scene.
  • Data were collected after normal sleep and 24 hours of wakefulness.

    • Main Results:

    • Sleep deprivation significantly increased postural sway exclusively during the IRT condition.
    • This increase in sway during IRT was consistent across all postural stability conditions.
    • No significant changes in postural sway were observed during the SRT or no-task conditions due to sleep deprivation.

    Conclusions:

    • Sleep deprivation specifically degrades postural control when cognitive inhibition is required.
    • The findings highlight the vulnerability of inhibitory control mechanisms to sleep loss.
    • Maintaining postural stability under conditions demanding cognitive control is compromised by insufficient sleep.