chin reflex

(redirected from chin-jerk reflex)

jaw re·flex

a spasmodic contraction of the temporal muscles following a downward tap on the loosely hanging mandible.

chin reflex, chin-jerk reflex

See jaw jerk.

chin reflex

A clonic movement resulting from percussion or stroking of the lower jaw.
Synonym: jaw jerk; jaw reflex
See also: reflex