vestibular nystagmus

involuntary eye movements consisting of slow drift in one direction followed by a rapid movement in the opposite direction, caused by stimulation of the vestibular apparatus during rotation of the head. Also called rotational nystagmus. Compare physiological nystagmus.

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Psychology term of the day

February 23rd 2025

thiopental

n. an ultrashort-acting barbiturate used primarily as an anesthetic that can be administered intravenously to produce almost immediate loss of consciousness. It may also be used as an antidote for an overdose of stimulants or convulsants. At one time, it was occasionally used in psychotherapy to induce a state of relaxation and suggestibility. In nonmedical circles, it gained notoriety as a truth serum. U.S. trade name: Pentothal.