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Effects of phototherapy in patients with delayed sleep phase syndrome
Author(s) -
Watanabe Tsuyoshi,
Kajimura Naofumi,
Kato Masaaki,
Sekimoto Masanori,
Takahashi Kiyohisa
Publication year - 1999
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.1440-1819.1999.00484.x
Subject(s) - polysomnography , delayed sleep phase , medicine , sleep (system call) , anesthesia , sleep disorder , insomnia , psychiatry , apnea , computer science , operating system
Phototherapy was given to six patients with delayed sleep phase syndrome (DSPS). Polysomnography (PSG) and core body temperature were examined before and after phototherapy. Phototherapy was administered to each patient for 5 days, and this treatment not only advanced the delayed sleep phase but also delayed the time of minimum body temperature in all patients. On the PSG, decreases in total sleep time and amounts of stages 2 and REM were observed after phototherapy. These results suggest that phototherapy is effective even in the short term in advancing delays in sleep phase and time of minimum body temperature in DSPS patients.