A sensitive sign of facial nerve weakness.
D005133:Eye Movements; D005143:Eyelids / Q000503:physiopathology*; D005154:Facial Nerve / Q000503:physiopathology*; D005158:Facial Paralysis / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D011187:Posture; D012021:Reflex, Abnormal; D013997:Time Factors