The plantar grasp reflex is an involuntary movement of the toes when the sole of the foot is stimulated. It is usually present at or soon after birth and disappears between 6 and 12 months of age.

It is a sign of normal development and function of the spinal cord and brain.

the plantar grasp reflex is not delayed for this age group. It should be present in all infants younger than 6 months.

the plantar grasp reflex is not absent for this age group. It should be elicited by pressing a thumb against the sole of the foot just behind the toes or by stroking gently the plantar surface medially with a blunt object.

the plantar grasp reflex is not exaggerated for this age group. It consists of the flexion and adduction of all toes as if the toes were firmly grasping the stimulating object. It is tonic in character, meaning that the posture is often maintained for 15 or 30 seconds, or longer during early infancy.