[Motor cortex neuron activity during elaboration of a motor conditioned reflex to electric stimulation of the ventrolateral nucleus of the thalamus].
Conditioned fore-leg movement was elaborated in cats to the electrical stimulation of the ventrolateral thalamic nucleus through one of the two chronically implanted electrodes (1+) and differentiation to a stimulation through the other electrode (2-). Then the signal meaning of the stimuli for the same animals was reversed (1-, 2+). Independently of the electrode through which the positive or differentiation stimulus was applied, the following was observed during the conditioned response: 1) in the biceps EMG a response to the conditioned stimulus was recorded with minimal latency of 8--12 ms; when the conditioned and differentiation stimuli were presented at random, the EMG response to the differentiation stimulation was considerably less pronounced or was totally absent: 2) Short-latency excitatory components of neuronal responses in the motor cortex to conditioned stimuli with a latency less than 6 and 12 ms were greater than the corresponding components of the response to differentiation stimuli.
D000818:Animals; D002415:Cats; D003214:Conditioning, Classical / Q000502:physiology*; D003463:Cues; D004558:Electric Stimulation; D004576:Electromyography; D005502:Food; D009043:Motor Activity / Q000502:physiology*; D009044:Motor Cortex / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D013787:Thalamic Nuclei / Q000502:physiology*; D014110:Touch
Aktivnost' neĭronov motornoĭ kory pri vyrabotke dvigatel'nogo uslovnogo refleksa na élektricheskoe razdrazhenie ventrolateral'nogo iadra talamusa.