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Related Concept Videos

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Related Experiment Video

Updated: Apr 28, 2026

The Rodent Psychomotor Vigilance Test rPVT: A Method for Assessing Neurobehavioral Performance in Rats and Mice
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Obstructive sleep apnea and psychomotor vigilance task performance.

Salma Batool-Anwar1, Stefanos N Kales2, Sanjay R Patel1

  • 1Department of Medicine, Sleep Disorders Program, Brigham and Women's Hospital, Boston, MA, USA.

Nature and Science of Sleep
|June 13, 2014
PubMed
Summary

Obstructive sleep apnea (OSA) impairs vigilance. Psychomotor vigilance task (PVT) performance, not OSA severity, correlated with sleepiness, offering objective risk assessment for fitness for duty.

Keywords:
obstructive sleep apneapsychomotor vigilance testsleepiness

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Area of Science:

  • Sleep Medicine
  • Neuroscience
  • Occupational Health

Background:

  • Obstructive sleep apnea (OSA) is a common disorder linked to impaired vigilance and attentiveness.
  • Subjective sleepiness reports in occupational settings are often unreliable.
  • Objective vigilance measures are crucial for assessing fitness for duty in OSA patients.

Purpose of the Study:

  • To evaluate the impact of OSA on attentiveness and vigilance.
  • To examine the association between OSA and psychomotor vigilance task (PVT) performance.

Main Methods:

  • Cross-sectional study of patients undergoing sleep apnea evaluation.
  • Polysomnography or home sleep studies were used for diagnosis.
  • Epworth Sleepiness Scale assessed subjective sleepiness; a portable device administered the 10-minute PVT.

Main Results:

  • Higher Epworth scores correlated with worse PVT performance.
  • Age, BMI, and poor sleep efficiency were associated with reduced PVT performance.
  • PVT performance did not significantly differ by OSA severity; women showed worse performance.

Conclusions:

  • PVT performance serves as a reliable objective measure for assessing sleepiness.
  • PVT is valuable for risk assessment in populations with unreliable subjective sleepiness reports.