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This database contains 4 studies, archived under the term: "phototherapy"

Impact of ambient bright light on agitation in dementia

Objective: To evaluate the effect of ambient bright light therapy (BLT) on agitation among institutionalized persons with dementia. Methods: High intensity, low glare ambient lighting was installed in activity and dining areas of a state psychiatric hospital unit in North Carolina and a dementia-specific residential care facility in Oregon. The study employed a cluster-unit crossover […]

Qualitative analysis of therapeutic light effects on global function in Alzheimer’s disease

The occurrence of Alzheimer’s disease (AD) is growing, with 68% of cases occurring in women. Declines in global function exacerbated by reversal of day-night patterns, disturbed sleep-wake rhythms, and excessive daytime sleepiness make managing AD difficult. In this study, the authors examined the effect and duration of effect of therapeutic light on sleep, rest-activity, and […]

Increasing walking and bright light exposure to improve sleep in community-dwelling persons with Alzheimer’s disease: results of a randomized, controlled trial

Objectives: To test the effects of walking, light exposure, and a combination intervention (walking, light, and sleep education) on the sleep of persons with Alzheimer’s disease (AD).; Design: Randomized, controlled trial with blinded assessors.; Setting: Independent community living.; Participants: One hundred thirty-two people with AD and their in-home caregivers.; Interventions: Participants were randomly assigned to […]

Prevention of depression and sleep disturbances in elderly with memory-problems by activation of the biological clock with light–a randomized clinical trial

Background: Depression frequently occurs in the elderly and in patients suffering from dementia. Its cause is largely unknown, but several studies point to a possible contribution of circadian rhythm disturbances. Post-mortem studies on aging, dementia and depression show impaired functioning of the suprachiasmatic nucleus (SCN) which is thought to be involved in the increased prevalence […]

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