[Changes in the segmental reactions in the decerebrate cat during scratching and locomotion]

Experiments on decerebrate cats have shown that N1 component potential of dorsal surface and dorsal root potential elicited by electrical stimulation of paw plantar surface tonically decrease during locomotion and scratching. Phase changes occur against a background of tonic changes in the rhythm of limb movements. The dynamics of the observed changes correlates well with that of primary afferent depolarization during these movements. It is concluded that presynaptic inhibition underlies the changes in segmental reactions.