Neurologic Exam-Adult | Motor Exam | Abnormal | Pathological reflexes

Motor Exam - Abnormal 11 - Pathological reflexes - frontal release signs- snout, root, palmomental These patterned behavior reflexes appear when there is damage to the frontal lobes, which normally inhibits these primitive reflexes. (1) A snout reflex occurs when a tongue blade is pressed on the lips and there is pouting of the lips. (2) A root reflex occurs when gently stroking the lateral upper lip causes the mouth to moves toward the stimuli. (3) A palmomental reflex occurs when stroking the palm of the hand causes the ipsilateral mentalis muscle of the lower lip to contract. (no audio)