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Evening preference and poor sleep independently affect attentional-executive functions in patients with depression
Evening activity patterns and poor sleep separately affect attention and thinking skills in people with depression
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Abstract
In a study of 34 inpatients with major depressive disorder (MDD) and 29 healthy controls, cognitive performance was significantly lower in patients with evening preference and severely impaired sleep quality.
- Patients with MDD scored worse on a test of executive function compared to healthy controls.
- No significant difference was observed in basic visuomotor processing speed between MDD patients and healthy controls.
- Participants with an evening preference scored lower on cognitive tests than those with a morning preference.
- Subgroup analysis within MDD patients showed evening preference negatively impacted cognitive performance.
- Patients with severely impaired sleep quality (PSQI > 10) demonstrated poorer cognitive function compared to those with better sleep quality (PSQI ≤ 10).
- Cognitive impairment in MDD appeared largely independent of current mood state.
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