[Characteristics of presynaptic inhibition of monosynaptic spinal cord reflexes after removal of the anterior lobe of the cerebellum].

In experiments on cats the antidromic responses from Ia fibres of n. gastrocnemius and n. peroneus profundus (Wall's technique) and monosynaptic discharges from VRL7 were recorded in norm and after removal of the cerebellum anterior lobe. The reduction of the amplitude of antidromic responses in the Ia afferents of n. gastrocnemius ad their increase in the Ia afferents of n. peroneus profundus were observed together with the reduction of the amplitude of both monosynaptic extensor and flexor responses. It is suggested that there exists a separate background control from the anterior lobe of the cerebellum over the spinal motoneurons and interneurons mediating presynaptic inhibition.