Neurons of upper cervical segments responding to stimulation of the bulbar locomotor strip

O. V. Kazennikov, V. A. Selionov, M. L. Shik, G. V. Yakovleva

Research output: Contribution to journalArticlepeer-review

Abstract

Synaptic responses of single neurons to stimulation of the bulbar "locomotor strip" were recorded extracellularly from superior cervical segments in mesencephalic cats. With a strength of stimulation of about 30 μA these responses usually had a latent period of 2-7 msec and they arose in neurons located at a depth of between 2 and 4 mm from the dorsal surface (Rexed's laminae V-VIII). These neurons could not be excited antidromically by stimulation of the lumbar or lower cervical segments. However, antidromic responses could be evoked by stimulation of a region located 3-5 mm caudally to the site of recording. It is suggested that neurons of segments C2 and C3 excited by stimulation of the locomotor strip are components of a cell column along which activity spreads polysynaptically in the direction of spinal stepping generators.

Original languageEnglish
Pages (from-to)179-185
Number of pages7
JournalNeurophysiology
Volume11
Issue number3
DOIs
StatePublished - May 1979

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