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Afternoon Naps Boost Brain Power, Warn of Dementia

1/31/2026

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Naps Enhance Cognition

A study published in NeuroImage shows that a 45-minute afternoon nap reorganizes synaptic connections and strengthens the brain's ability to form new connections.
Researchers describe this change as a synaptic reset that helps people think more clearly and maintain focus, particularly in high-performance jobs.
A separate study finds that Isolated REM Sleep Behavior Disorder (iRBD) in older adults may signal early dementia, with cognitive decline observed over time.

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iRBD Impacts Cognition

A study from Seoul National University Bundang Hospital found that Isolated REM Sleep Behavior Disorder (iRBD) may lead to cognitive decline in older adults.
The seven-year study tracked 162 patients and found significant memory deterioration, especially in processing speed and working memory.
Even patients who did not progress to dementia exhibited cognitive loss.
Women with iRBD showed greater resilience to cognitive decline than men, suggesting sex-specific monitoring strategies.

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Naps Enhance Cognition

A study published in NeuroImage shows that a 45-minute afternoon nap reorganizes synaptic connections and strengthens the brain's ability to form new connections.
Researchers describe this change as a synaptic reset that helps people think more clearly and maintain focus, particularly in high-performance jobs.
A separate study finds that Isolated REM Sleep Behavior Disorder (iRBD) in older adults may signal early dementia, with cognitive decline observed over time.

1 / 2