Effect of ketamine on the stapedius reflex in the squirrel monkey.
We evaluated the effect of ketamine hydrochloride on the acoustically elicited stapedius reflex of squirrel monkeys. After intramuscular injection, in the presence of normal tympanometry, the amplitude of the contralateral stapedius reflex was severely depressed, even at low, preanesthetic dose levels. Possible mechanisms for the mediation of this unexpected effect are discussed.
D000158:Acoustic Impedance Tests; D000818:Animals; D007649:Ketamine / Q000494:pharmacology*; D010424:Pentobarbital / Q000494:pharmacology; D012022:Reflex, Acoustic / Q000187:drug effects*; D012453:Saimiri
D007649:Ketamine; D010424:Pentobarbital