What does the Babinski reflex involve when the bottom of the foot is struck?

• A. Fanning out of the toes
• B. Numbing of the foot
• C. Raising of the heel
• D. Flexing of the toes

Answer: (A)

The Babinski reflex is a neurological response that occurs when the sole of the foot is stimulated, typically by a gentle stroke along the bottom. This reflex is characterized by the fanning out or spreading of the toes, accompanied by an upward movement of the big toe. This reaction is normal in infants and is an indication of healthy neurological function. In adults, the presence of the Babinski reflex could indicate neurological issues or damage, as the normal response in adults is to curl the toes downwards instead of fanning them out. Therefore, the fanning out of the toes is indicative of the Babinski reflex and signifies important information about the nervous system’s integrity.