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Short-term total sleep deprivations does not selectively impair higher cortical functioning
P G Binks1, W F Waters, M Hurry
1Department of Psychology, Louisiana State University, Baton Rouge, USA.
Sleep
|May 26, 1999
Summary
One night of total sleep deprivation (34-36 hours) does not impair higher cortical functions like cognitive flexibility. Performance on attention and higher cortical tasks remained unaffected in sleep-deprived individuals compared to controls.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Sleep Research
Background:
- Total sleep deprivation exceeding 48 hours impairs attention and vigilance.
- Limited research exists on sleep deprivation's impact on higher cortical functions, such as cognitive flexibility.
Purpose of the Study:
- To investigate the effects of 34-36 hours of total sleep deprivation on higher cortical functioning.
- To test the hypothesis that shorter sleep deprivation periods adversely affect higher cortical function more than attention.
Main Methods:
- Compared performance on intelligence, sustained attention, and higher cortical function tests.
- Utilized 29 subjects undergoing 34-36 hours of sleep deprivation and 32 healthy controls.
Main Results:
- No significant differences in performance were observed between the sleep-deprived group and the control group on any tested measure.
- The study did not find evidence supporting the hypothesis that shorter sleep deprivation impairs higher cortical functions.
Conclusions:
- One night of total sleep deprivation (34-36 hours) does not appear to impair performance on tasks assessing higher cortical functioning.
- Cognitive flexibility and response set shifting abilities remain intact after 34-36 hours of sleep deprivation.