The<unk>  <unk>  is a primitive reflex consisting of a twitch of the chin muscle elicited by stroking a specific part of the palm. It is present in infancy and disappears as the brain matures during childhood but may reappear due to processes that disrupt the normal cortical inhibitory pathways. Therefore, it is an example of a frontal release sign.
Palmomental reflex
Galant reflex
Landau reflex
Snout reflex
Tonic labyrinthine reflex
Pharyngeal reflex
Churchill–Cope reflex
Diving reflex