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Responses of the neurons of the caudate nucleus of the cat to the presentation of audible clicks in a chronic experiment


, : Responses of the neurons of the caudate nucleus of the cat to the presentation of audible clicks in a chronic experiment. Neirofiziologiya 12(1): 28-35

Background and evoked activities of the caudate nucleus neurons to repetitive auditory clicks were recorded extracellularly in partially restrained cats. Four types of background neuronal activity were distinguished. Of recorded units, 44% altered their background activity during auditory click applications. Five types of neuronal responses were found: phasic activation, phasic inhibition, tonic activation, tonic inhibition and mixed tonic reactions. Tonic activation was predominant. The phasic responses persisted under prolonged presentation of clicks. Partial or total attenuation of tonic responses during frequent repetition of clicks occurred in 33% of responding units. The convergence of specific and unspecific influences on the caudate nucleus neurons is discussed.

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