Plantar Reflex Examination: A Quick Guide The plantar reflex is a critical neurological test used to assess the integrity of the corticospinal tract. Here's how to perform and interpret it effectively: Method of Examination: Use a blunt object (like the handle of a reflex hammer, key or a tongue depressor). Apply moderate force—firm enough to stimulate but not to cause pain. Stroke the lateral border of the sole, starting at the heel and moving toward the little toe, then curve across the ball o