what is a babinski reflex
Definition. Babinski reflex is one of the normal reflexes in infants. Reflexes are responses that occur when the body receives a certain stimulus. The Babinski reflex occurs after the sole of the foot has been firmly stroked. The big toe then moves upward or toward the top surface of the foot.The other toes fan out.hen the Babinski reflex is present in a child older than 2 years or in an adult, it is often a sign of a brain or nervous system disorder. Disorders may include: 1  Amyotrophic lateral sclerosis (Lou Gehrig disease).