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Skin blood flow responses during sleep by laser Doppler flowmetry
Author(s) -
Shiihara Yasufumi,
Hirota Akihisa,
Kobayashi Yosinari,
Nakamiya Toshiyuki,
Kodama Masahisa
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.1440-1819.1999.00502.x
Subject(s) - laser doppler velocimetry , blood flow , sleep (system call) , medicine , anesthesia , cardiology , computer science , operating system
Skin surface blood flow at the fingertips was measured in a 21‐year‐old woman during sleep using laser Doppler flowmetry. Skin blood flow responses (SBFR) are transient reductions in skin blood flow of about 25 s in duration. In our subject, SBFR showed a delay time of 8–9 s from the onset of skin potential responses (SPR) and appeared more consistently than SPR. The frequency of SBFR decreased during non‐rapid eye movement sleep, especially when the sleep stage became deep. These findings indicate the validity of SBFR as a discrete index of autonomic function during sleep.