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Less effective executive functioning after one night's sleep deprivation.

Jens P Nilsson1, Marie Söderström, Andreas U Karlsson

  • 1National Institute for Psychosocial Medicine, Stockholm, Sweden. jens.nilsson@ipm.ki.se

Journal of Sleep Research
|March 4, 2005
PubMed
Summary

One night of sleep deprivation (SD) impairs integrative executive functioning, particularly on ecologically valid tasks. Cognitive work performance may be affected, while basic working memory remains intact.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Sleep Research

Background:

  • The prefrontal cortex (PFC) is crucial for executive functioning and is vulnerable to sleep deprivation (SD).
  • Previous research on executive functioning after SD has limitations due to unreliable and invalid testing methods.
  • Integrative executive functioning, which combines multiple cognitive processes, has not been thoroughly studied in relation to SD.

Purpose of the Study:

  • To investigate the effects of one night of SD on integrative executive functioning in healthy adults.
  • To compare performance on an ecologically valid executive function test between sleep-deprived and control groups.
  • To assess the impact of SD on specific cognitive domains, including psychomotor vigilance and working memory.

Main Methods:

Related Experiment Videos

  • A study involving 22 healthy volunteers, with 11 undergoing one night of sleep deprivation and 11 serving as controls.
  • Utilized the modified Six Elements Test, an ecologically valid measure of integrative executive functioning.
  • Administered tests for psychomotor vigilance, verbal working memory, and visuo-spatial working memory.

    • Main Results:

    • Sleep deprivation significantly impaired performance on the modified Six Elements Test.
    • No significant group differences were observed in psychomotor vigilance, verbal working memory, or visuo-spatial working memory.
    • This suggests a specific vulnerability of integrative executive functions to acute sleep loss.

    Conclusions:

    • Acute sleep deprivation selectively impairs integrative executive functioning, as measured by ecologically valid tasks.
    • Basic cognitive functions like working memory and vigilance may be less affected by a single night of SD.
    • These findings highlight potential risks for individuals engaged in cognitively demanding work tasks following sleep loss.