[Effect of tractotomy on the reflex activity of the lumbar segment of the spinal cord severed after sectioning of the sciatic nerve in the rat].

Electrical responses of the spinal cord roots of rats evoked by the preliminary cutting of nerve were investigated in 1, 3, 7 and 14 days after tractotomy. Mean amplitude of the monosynaptic reflex discharges in ventral roots on the side of nerve section is substantially higher 7 and 14 days after the tractotomy, than that of these responses 1 and 3 days after it.