Sleep: Cortical and Subcortical Recordings in the Chimpanzee

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Science  06 Sep 1963:
Vol. 141, Issue 3584, pp. 932-933
DOI: 10.1126/science.141.3584.932


Etectroencephalographic sleep patterns of chimpanzees reveal greater similarities to human records than those of lower mammals. Flash-evoked responses in the midbrain reticular formation remain during "paradoxical" sleep, which does not appear to necessarily involve deep unconsciousness. Characteristic spindling occurs in the amygdala during a "paradoxical" type sleep while other areas were desynchronized. Telencephalic sleep-control mechanisms in higher primates are considered.