[Characteristics of the neuronal responses of the auditory zone of the cortex of awake cats in the resting state and during an elaborated defensive conditioned reflex].
The responses of 288 neurons with background activity in the first auditory cortex were investigated using glass microelectrodes in chronic experiments on cats at rest (123 neurons) and during elaboration of a defensive conditioned reflex to sound stimulation (165 neurons). At rest 43% of recorded neurons did not respond to the sound stimulus. Pronounced inhibition of background activity prevailed among responding neurons (about 60%). The conditioning caused an increase (to 72%) in proportion of neurons responsive to the sound stimulus, appearance of tonic reactions, as well as an increase in frequency of bursts and in proportion of activation type responses. It is suggested that these changes indicate the enhancement of neurons excitability in the zone under study during conditioning.
D000818:Animals; D001303:Auditory Cortex / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D002415:Cats; D003214:Conditioning, Classical / Q000502:physiology*; D003463:Cues; D004594:Electrophysiology; D004597:Electroshock; D013016:Sound
Osobennosti neĭronnykh reaktsiĭ slukhovoĭ zony kory bodrstvuiushchikh koshek v sostoianii pokoia i pri vyrabotannom oboronitel'nom uslovnom reflekse.