plantar grasp reflex, a reflex characterized by the flexion of the toes when the sole of the foot is stroked gently. It is present in infants at birth but should disappear after 6 weeks.

plantar grasp reflex, a reflex characterized by the flexion of the toes when the sole of the foot is stroked gently. It is present in infants at birth but should disappear after 6 weeks.