Specific oculomotor deficit after acute methadone: II. Smooth pursuit eye movements
S Rothenberg, S Schottenfeld, D Selkoe, K Gross - Psychopharmacology, 1980 - Springer
S Rothenberg, S Schottenfeld, D Selkoe, K Gross
Psychopharmacology, 1980•SpringerAbstract Changes in smooth pursuit eye tracking of targets moving sinusoidally in horizontal
and vertical planes before and after up to 10 mg oral methadone were measured
electrooculographically in nontolerant nondependent humans. Methadone depressed the
gain of horizontal tracking movements at most frequencies tested (0.2–1.6 Hz) without
changing target-eye phase relationships. Lack of change in target-eye crosscorrelation
functions after methadone and examination of individual records indicate that gain reduction …
and vertical planes before and after up to 10 mg oral methadone were measured
electrooculographically in nontolerant nondependent humans. Methadone depressed the
gain of horizontal tracking movements at most frequencies tested (0.2–1.6 Hz) without
changing target-eye phase relationships. Lack of change in target-eye crosscorrelation
functions after methadone and examination of individual records indicate that gain reduction …
Abstract
Changes in smooth pursuit eye tracking of targets moving sinusoidally in horizontal and vertical planes before and after up to 10 mg oral methadone were measured electrooculographically in nontolerant nondependent humans. Methadone depressed the gain of horizontal tracking movements at most frequencies tested (0.2–1.6 Hz) without changing target-eye phase relationships. Lack of change in target-eye crosscorrelation functions after methadone and examination of individual records indicate that gain reduction was due to the eye failing to follow the target to the full extent of target excursion (±5° from eyes straight ahead view). Possible mechanisms and the practical consequences of methadone action on smooth pursuit were discussed.
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