Electrically induced monosynaptic reflexes in man.

A monosynaptic reflex produced by electrical stimu-lation of the mixed nerve in humans (H-reflex) can frequently be evoked in the calf muscles at a stimulus intensity below threshold for the motor nerve fibres. In special states, such as spasticity, low threshold H-reflexes are more easily elicited and more widely distributed in muscles other than the calf