Skin blood flow responses during sleep by laser Doppler flowmetry.
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 25s in duration. In our subject, SBFR showed a delay time of 8-9s 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.
Shiihara
Y
Y
School of Health Sciences, Gunma University School of Medicine, Japan.
Hirota
A
A
Kobayashi
Y
Y
Nakamiya
T
T
Kodama
M
M
D000328:Adult; D001143:Arousal / Q000502:physiology; D001341:Autonomic Nervous System / Q000502:physiology; D001783:Blood Flow Velocity / Q000502:physiology; D005260:Female; D005712:Galvanic Skin Response / Q000502:physiology; D006801:Humans; D017078:Laser-Doppler Flowmetry; D017286:Polysomnography; D012867:Skin / Q000098:blood supply*; D012894:Sleep Stages / Q000502:physiology*