– PRIMITIVE REFLEXES: THE PLANAR REFLEX – The plantar reflex is elicited when the sole of the foot is stimulated (with an object such as a paint brush) and the toes become flexed or spread out. The reflex serves the purpose of protecting the sole of the foot, being normally fully integrated by 1 year of age. Signs of retention include; poor fine motor skills and manual dexterity, immature pencil grip and poor handwriting, weak immune system, poor bladder control, stomach reflux, difficulty proce