Elevation in Brain Temperature during Paradoxical Sleep

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Science  12 Nov 1965:
Vol. 150, Issue 3698, pp. 912-913
DOI: 10.1126/science.150.3698.912


During ordinary sleep, the temperature of the rabbit brain tended to drop, but during paradoxical sleep it rose sharply 0.1° to 0.4°C, a greater elevation than was observed during arousal. Changes in body temperature generally did not parallel the alterations in brain temperature. Shifts of direct-current potential in the brain are basically independent of the changes in brain temperature.