A reflex elicited by quick, vigorous dorsiflexion of the foot while the knee is held in a flexed position, resulting in repeated clonic movement of the foot as long as it is maintained in dorsiflexion. In women with pregnancy induced hypertension, this reflects hyperirritability of the central nervous system and increased risk for eclamptic convulsions.
Rhythmic contractions of the calf muscles when pressure is applied to the sole of the foot.