[Reaction of caudate nucleus neurons to acoustic stimulation during functional exclusion of the medial geniculate body].
In chronic experiments, responses of the cat caudate nucleus neurons to sound clicks (0.2/s) were recorded extracellularly under conditions of functional blockade of the medial geniculate body (MGB). Analysis of the average poststimulus histograms showed that, under anodic polarization of the parvo- and magnocellular parts of the MGB, 39% of the caudate nucleus neurons responded to sound signals by a decrease of phasic activation and 30% of neurons--by its disappearance, 9%--by lengthening of latency of the responses. In some units the anodic polarization of the MGB magnocellular part induced an increase in phasic activation. Stimulation of the MGB exerted a facilitating effect on the unit responses of the caudate nucleus to clicks.
D000161:Acoustic Stimulation; D000818:Animals; D002415:Cats; D002421:Caudate Nucleus / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D005829:Geniculate Bodies / Q000502:physiology*; D011930:Reaction Time
Reaktsii neĭronov khvostatogo iadra na zvukovoĭ razdrazhitel' pri funktsional'nom vykliuchenii medial'nogo kolenchatogo tela.