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  • Title: [Bright light therapy].
    Author: Kamei Y.
    Journal: Nihon Rinsho; 2009 Aug; 67(8):1611-5. PubMed ID: 19768950.
    Abstract:
    Bright light is a treatment of choice for seasonal affective disorder. Other indications for bright light therapy have also been tested. These include circadian rhythm sleep disorders, early-morning awakening or sleep-maintenance insomnia in elders and behavioral disturbance or insomnia in organic dementia. In these sleep disorders, the pattern of sleep-wake is misaligned with the patient's circadian system or the external environment, resulting in insomnia. Appropriately-timed exposure to bright light can shift the sleep-wake cycle to earlier or later times, in order to correct for misalignment between the circadian system and the desired sleep-wake schedule. Evidence of the efficacy of bright light was so limited. Further research is needed to determine guidelines for the appropriate timing and safe use of bright light therapy.
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