[Electrophysiological study of cutaneous reflexes during avoidance reaction of the arms (author's transl)]

Electrophysiological studies of the cutaneous reflexes during avoidance reaction of the arms demonstrate more particularly the presence of facilitation of late reflex responses and stimultaneous activation of flexor and extensor muscles. The avoidance reaction is not the inverse electrophysiological image of pathological prehension, as it produces, at least in one of its aspects, a much more fundamental modification of the segmental reflex systems of muscle contraction regulation. This motor disorganization is rarely observed, and could result from a disequilibrium between proprioceptive sensitivity and skin sensitivity: the loss of proprioceptive control would facilitate contact reactions.