[Effects of electric stimulation of the dentate nucleus of the cerebellum on neuronal activity of the centrum medianum of the optic thalamus].
Electrical stimulation of the cerebellar dentate nucleus elicits in neurons of the center median responses with either constant or altering latencies. The constant latencies ranged from 2-3 to 8-12 msec. Responses with altering latencies were more numerous and had the latencies up to 20 msec. In both responses with early and late components were recorded as well. Dentate stimulations induced "periods of inhibition" in CM neurons with leading duration of 50-100 msec. Synchronization of the SM unit activity during low-frequency stimulation was also revealed, in many cases it was preceded by the "periods of inhibition". Activity of 49% of reactive neurons during 1, 7-12, and 70-100/sec stimulations was facilitated, 31% depressed, and 20% had a mixed type of responses: facilitation on one frequency and depression on another. Immediate cessation of the effects after termination of stimulations was observed in 34% of neurons, while tonic influences were manifest in 66%.
D000818:Animals; D001931:Brain Mapping; D002415:Cats; D002529:Cerebellar Nuclei / Q000502:physiology*; D004558:Electric Stimulation; D004594:Electrophysiology; D009433:Neural Inhibition; D009434:Neural Pathways; D011930:Reaction Time; D013787:Thalamic Nuclei / Q000502:physiology*
Effekty élektricheskogo razdrazheniia zubchatogo iadra mozzhechka na aktivnost' neĭronov iadra sredinnogo tsentra zritel'nogo bugra.