The precursor of the evoked spindle activity during low voltage fast sleep.
D000818:Animals; D002415:Cats; D002540:Cerebral Cortex / Q000502:physiology*; D004558:Electric Stimulation; D004569:Electroencephalography; D012890:Sleep; D012895:Sleep, REM / Q000502:physiology; D013788:Thalamus / Q000502:physiology*