title: [Effect of stimulation of the head of the caudate nucleus on differentiation of acoustic signals in a defensive situation in the dog].
abstract: In chronic experiments with a model of instrumental defensive reflexes, the influence of preliminary low-frequency stimulation of n. caudatus head on differentiation of acoustic signals was studied in six dogs. By their motor behaviour the animals were conditionally divided into two groups: excitable and quiet dogs. In these two groups principally similar results were obtained. It was shown that in defensive situation, the caudate nucleus head stimulation does not change (or slightly changes) the formed type of reactions to both defensive and differentiation signals. Striate inhibitory effects revealed in experiments (mainly in quiet dogs) are probably connected with the intensification of mechanisms of selective attention to significant stimuli. The motor reaction of the animals to a "finer" differentiation signal appeared to approach the responses to "rougher" differentional stimuli.
mesh_terms: D000818:Animals; D001307:Auditory Perception / Q000502:physiology*; D001931:Brain Mapping; D002421:Caudate Nucleus / Q000502:physiology*; D003216:Conditioning, Operant / Q000502:physiology*; D004193:Discrimination Learning / Q000502:physiology*; D004285:Dogs; D004558:Electric Stimulation; D011930:Reaction Time / Q000502:physiology; D013998:Time Perception / Q000502:physiology*
vernacular_title: Vliianie stimuliatsii golovki khvostatogo iadra na differentsirovanie zvukovykh signalov v oboronitel'noĭ situatsii u sobak.