title: Effect of stimulation of the reticular nucleus of the thalamus on neuronal activity of associative and nonspecific thalamic structures.
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.
authors: Laboratory of Evolution of Functions of Subcortical Structures of the Brain, L. A. Orbeli Institute of Physiology, Academy of Sciences of the Armenian SSR, Erevan.
authors: A A
authors: AA
authors: Airapetyan
authors: L G
authors: LG
authors: Vaganyan
authors: R A
authors: RA
authors: Bagdasaryan
authors: I G
authors: IG
authors: Tatevosyan
mesh_terms: D000200:Action Potentials; D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D009434:Neural Pathways / Q000502:physiology; D010525:Peripheral Nerves / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D013787:Thalamic Nuclei / Q000502:physiology*