The effect of apomorphine on blink kinematics in subhuman primates with and without facial nerve palsy.

Purpose: The purpose of this study was to document the effect of acutely delivered apomorphine, a dopamine receptor agonist with both D1 and D2 properties, on blink rate and the amplitude-velocity characteristics of eyelid kinematics in a group of nonhuman primates.

Methods: Three cynomolgus and two rhesus macaques underwent baseline recordings for eyelid kinematics, using the Robinson search coil technique. Next, each animal received a 0.