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Nov
2014

Numerous studies have explored the effectiveness of bright light therapy as a treatment of sleep disorders in nursing home and long-stay geriatric hospital residents, most of whom have dementia. A recent Cochrane Collaboration meta-analysis of 10 selected studies concluded that there was insufficient evidence to assess its therapeutic efficacy as most available studies had methodological problems. We sought to remedy this situation by developing proposals to guide research methods in future studies.
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http://dx.doi.org/10.1111/pcn.12192DOI ListingPossible


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Nov
2014

The purpose of this study was to examine bright light as a means of intervention in sleep-wakefulness and behavior disorder among patients with dementia through a review of the relevant literature. Fourteen articles were reviewed in depth for study design, intervention protocols, concurrent control groups, subject characteristics, and outcome measures of behavior and sleep. Previous studies found that behavior disorders improved, although not all the studies reviewed reported a quantitative measure of improvement.

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Dec
1969

Rest-activity and sleep-wake cycles are controlled by the endogenous circadian rhythm generated by the suprachiasmatic nuclei (SCN) of the hypothalamus. Degenerative changes in the SCN appear to be a biological basis for circadian disturbances in people with dementia, and might be reversed by stimulation of the SCN by light.
The review assesses the efficacy of bright light therapy (BLT) in managing sleep, behaviour, mood, and cognitive disturbances associated with dementia.

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Oct
2009

Rest-activity and sleep-wake cycles are controlled by the endogenous circadian rhythm generated by the suprachiasmatic nuclei (SCN) of the hypothalamus. Degenerative changes in the SCN appear to be a biological basis for circadian disturbances in people with dementia, and might be reversed by stimulation of the SCN by light.
The review assesses the evidence of effectiveness of light therapy in managing cognitive, sleep, functional, behavioural, or psychiatric disturbances associated with dementia.

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Jun
2003

This study evaluates the effects of bright light therapy among demented nursing home patients with sleep disturbances.
11 nursing home patients with actigraphically measured sleep efficiency below 85% took part in an open, non-randomised study where the subjects served as their own control.
After two weeks of baseline measurements and two weeks of pretreatment measurements, patients received bright light exposure 2 h/day within the period 08:00-11:00 for two weeks.

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