[Activity of spinal cord neurons and their responses to stimulation of the "stepping" strip during spontaneous locomotor rhythmicity].
Spike activity of single neurons in the upper cervical segments C2-C3 or at the brachial enlargement C5-C6 was recorded in decerebrated cats during spontaneous locomotor rhythm after transection of the spinal cord at the low thoracic level. The shortest interspike intervals in 66% of cyclically active neurons at C5 were observed during electrical activity of extensor muscles of the ipsilateral forelimb. Only 8% of these neurons responded to stimulation of the stepping strip. The shortest interspike intervals in 65% of cyclically active neurons at C2 were observed during a silent period in extensor activity. 45% of C2 neurons responded to stimulation of the stepping strip. 87% of non-cyclic neurons responded to stimulation of the strip, were located at the C2 level.
D000818:Animals; D002415:Cats; D003655:Decerebrate State / Q000503:physiopathology; D004558:Electric Stimulation; D004576:Electromyography; D007395:Interneurons / Q000502:physiology; D008124:Locomotion; D009132:Muscles / Q000502:physiology; D010507:Periodicity; D011930:Reaction Time / Q000502:physiology; D013116:Spinal Cord / Q000502:physiology*
Aktivnost' neĭronov spinnogo mozga i ikh otvety na razdrazhenie "shagatel'noĭ" poloski vo vremia spontannoĭ lokomotornoĭ ritmiki.