Effects of motor cortex stimulation on spinal interneurones in intact man
- 1 March 1984
- journal article
- research article
- Published by Springer Nature in Experimental Brain Research
- Vol. 54 (2) , 382-384
- https://doi.org/10.1007/bf00236241
Abstract
The effect of a descending corticospinal volley on a spinal inhibitory pathway, has been studied in five intact human subjects. Approximately 63% inhibition of the H-reflex evoked in wrist and finger flexor muscles, was produced by motor threshold stimulation of the radial nerve. When a submotor threshold cortical shock was given 2 to 4 ms before the H-reflex, this inhibition was reduced to approximately 38%. The timing of this effect is compatible with either a monosynaptic or disynaptic corticospinal tract projection onto the spinal inhibitory interneurone.Keywords
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