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Effects of bright light at lunchtime on sleep of patients in a geriatric hospital I
Author(s) -
Kobayashi Riko,
Fukuda Noriko,
Kohsaka Masako,
Sasamoto Yoichi,
Sakakibara Satoshi,
Koyama Emi,
Nakamura Fumihiro,
Koyama Tsukasa
Publication year - 2001
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1046/j.1440-1819.2001.00863.x
Subject(s) - sleep (system call) , psychology , psychiatry , audiology , medicine , computer science , operating system
The effects of lunchtime bright light exposure in patients of a geriatric hospital were investigated. Ten inpatients (six women and four men; mean age ± SD: 81.2 ± 8.8 years) with sleep disturbances were studied for 9 weeks. Nurses performed daily ratings for sleep–wakefulness disturbances. Approximately 8000 lx bright light exposure was performed for 3 weeks in the light therapy room. Before and after exposure, ocular function was evaluated. Clinical ratings of sleep‐wakefulness improved in eight patients. The score of difficulty in falling asleep and drowsiness in the morning declined during the light exposure. The score of drowsiness in the afternoon decreased during the post‐light exposure. Post‐exposure ocular disturbances were not found.