Abstract
The reactions of neurons of the centromedian, mediodorsal, and posterior lateral nuclei of the thalamus to electrostimulation of its reticular nucleus were studied in experiments on anesthetized cats. A high reactivity of neurons of the centromedian (53.7%) and mediodorsal (48.3%) nuclei in comparison with the posterior lateral (10%) was established. “Silent” neurons reacted by an excitatory type of reaction having a phasic chamber. Primary and secondary inhibitory reactions were noted among the spontaneously active neurons. The latent period of the excitatory reactions of the neurons of the centromedian nucleus varied from 5 to 33.6 msec (14.83±1.77 msec) and of the mediodorsal nucleus from 3.5 to 44.8 msec (18.03±2.5 msec). A high degree of convergence of reticular and somatovisceral signals on neurons of the centromedian nucleus (52.83%) and mediodorsal nucleus (53.5%) was found. An inhibitory type of interaction of central and peripheral influences was established.
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Translated from Fiziologicheskie Zhurnal SSSR imeni I. M. Sechenova, Vol. 74, No. 7, pp. 924–932, July, 1988.
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Airapetyan, A.A., Vaganyan, L.G., Bagdasaryan, R.A. et al. Effect of stimulation of the reticular nucleus of the thalamus on neuronal activity of associative and nonspecific thalamic structures. Neurosci Behav Physiol 19, 352–358 (1989). https://doi.org/10.1007/BF01236028
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DOI: https://doi.org/10.1007/BF01236028