Regional brain glucose metabolism is altered during rapid eye movement sleep in the cat: a preliminary study.

Glucose utilization was measured in 74 brain regions of the cat during states of wakefulness or rapid eye movement (REM) sleep. These data were obtained from intact, unanesthetized animals which were instrumented for objectively measuring states of consciousness. Through a chronically implanted intravenous catheter, the cats received 250 microCi of magnitude of 6-14C glucose during REM sleep (N = 3) or during wakefulness (N = 3).