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Improvement in behavioral symptoms and advance of activity acrophase after short‐term bright light treatment in severe dementia
Short-term bright light treatment improves behavior and shifts daily activity timing in severe dementia
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Abstract
Bright light exposure of 5000-8000 lux for 45 minutes each morning over four weeks improved behavioral symptoms in ten elderly subjects with severe dementia.
- Behavioral symptoms in dementia were assessed using two rating scales: the Cohen-Mansfield Agitation Inventory and the Behavior Pathology In Alzheimer's Disease Rating Scale.
- Improvements in behavioral symptoms were observed following the bright light treatment.
- No significant changes were noted in sleep-wake measures.
- The activity rhythm showed an advancement of its peak timing during the treatment period.
- These findings indicate that bright light may positively affect behavioral symptoms and activity rhythm disturbances in severely demented individuals.
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