REM sleep-associated hemoglobin oxygenation in the monkey forebrain studied using near-infrared spectrophotometry.
The oxygenation state of hemoglobin (Hb) in the monkey forebrain was monitored continuously throughout nocturnal sleep using a near-infrared spectrophotometric technique. During rapid eye movement (REM) sleep, an increase in oxygenated Hb occurred concomitantly with a decrease in deoxygenated Hb, while no significant changes in Hb oxygenation were observed during slow wave sleep (SWS). A gradual increase in total Hb content was also observed to occur during each REM sleep episode but not during SWS.
Onoe
H
H
Department of Neuroscience, Osaka Bioscience Institute, Japan.
Watanabe
Y
Y
Tamura
M
M
Hayaishi
O
O
D000818:Animals; D001923:Brain Chemistry / Q000502:physiology*; D004569:Electroencephalography; D004576:Electromyography; D004585:Electrooculography; D006339:Heart Rate / Q000502:physiology; D006454:Hemoglobins / Q000378:metabolism*; D007834:Lasers; D008253:Macaca mulatta; D010101:Oxygen Consumption / Q000502:physiology; D010775:Photic Stimulation; D012895:Sleep, REM / Q000502:physiology*; D013055:Spectrophotometry, Infrared
D006454:Hemoglobins