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.