Neurobiology of Sleep-Wakefulness Cycle 2(1): 33-36, 2002
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© 2002 NSWC
Letter to the Editor
Recieved 31 January 2002.
Phylogenetically simultaneous origin of the waking state ("neowaking") and slow wave sleep (SWS) is supposed related to evolutionary appearance of homoiothermia in mammals and birds. Paradoxical sleep (PS) is regarded in a way of "archeowaking", that is the result of evolutionary transformation of the primitive waking state of poikilothermic vertebrates.
Key Words: evolution of sleep.
Correspondence: Kovalzon Victor M.,
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences,
Leninsky Prospect, 33, 119071 Moscow, Russia