[Polygraphic study of sleep in dogs].
Phenomenology and structure of the dog sleep were studied in chronic experiments.  Three stages of NREM and REM phases were revealed.  Sleeep in the dog was shown to differ from sleep in the rat, rabbit, and cat by appearance of alpha-like regular rhythm 8--9/sec during the onset of drowsiness, and by the sigma-rhythm first appearing against the background of clear slow waves.  The exact estimation of REM sleep was shown to need a combined consideration of the EEG data with one of the two other signs (EMG or EOG).
D000818:Animals; D001921:Brain / Q000502:physiology*; D004285:Dogs; D004569:Electroencephalography; D004576:Electromyography; D004585:Electrooculography; D012890:Sleep; D012894:Sleep Stages; D012895:Sleep, REM
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