Researchers from Penn State University College of Medicine found that cognitive impairment was associated with objectively measured short sleep duration.

Data (n=1741) from the Penn State Adult Cohort (PSAC) who were observed at the sleep laboratory between 1990 and 1999 were analyzed for this study. Participants were assessed with a comprehensive neuropsychological battery and evaluated over night for 8 hours monitored by a polysomnography.

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