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Sleep-disordered breathing and neuropsychological deficits. A population-based study
H C Kim1, T Young, C G Matthews
1Department of Preventative Medicine, University of Wisconsin-Madison, USA.
American Journal of Respiratory and Critical Care Medicine
|December 31, 1997
Summary
Sleep-disordered breathing (SDB) is linked to reduced psychomotor efficiency in adults. Mild SDB impacts cognitive function comparable to aging or sedative use, highlighting the importance of addressing sleep health.
Area of Science:
- Neuroscience
- Sleep Medicine
- Psychology
Background:
- Sleep-disordered breathing (SDB) is a prevalent condition affecting sleep quality and potentially cognitive function.
- Population-based studies are crucial for understanding the natural history and consequences of SDB.
Purpose of the Study:
- To investigate the relationship between SDB and neuropsychological deficits.
- To assess the impact of SDB on psychomotor efficiency and memory.
Main Methods:
- Cross-sectional analysis of 841 participants from the Wisconsin Sleep Cohort Study (ages 30-60).
- Overnight polysomnography to determine the apnea-hypopnea index (AHI).
- Comprehensive neuropsychological testing assessing motor skills, attention, concentration, information processing, and memory.
Main Results:
- A significant negative association was found between the apnea-hypopnea index (AHI) and psychomotor efficiency, independent of age, gender, and education (p=0.017).
- This relationship persisted even after accounting for self-reported sleepiness.
- No significant link was observed between AHI and memory performance.
Conclusions:
- SDB, particularly mild SDB, is associated with decrements in psychomotor efficiency.
- An AHI of 15 suggests a cognitive impact equivalent to approximately 5 years of aging or substantial sedative use.
- These findings underscore the clinical significance of SDB for cognitive health, specifically psychomotor function.