Presetting of excitability of the spinal Ia inhibitory pathway in relation to the direction of an intended movement.
The spinal Ia inhibitory pathway which reciprocally inhibits hindlimb extensor motoneurons was found to be potentiated when human subjects were prepared, but not initiated, to perform a quick dorsiflexion at the ankle in response to a somesthetic stimulus.
Tanji
J
J
Department of Physiology, Hokkaido University School of Medicine, Sapporo 060 Japan.
Taniguchi
K
K