The plantar reflex is a nociceptive segmental spinal reflex that occurs as a normal defensive response to any painful stimulus. It is a sensitive and reliable method for evaluating the integrity of the motor pathways to the lower limb. The Babinski reflex is characterized by the hyperextension of the big toe and the fanning out of the other toes when the foot is stroked upward from the heel. There are various methods to elicit the Babinski signs.
Amar Taksande, Syed Athhar Saqqaf, Abhilasha Singh Panwar R. Planter reflex: An important superficial reflex. Int. J. Pediatr. Neonatology 2020;2(1):01-03.