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May 1979

Effects of Cerebellectomy on Eye Movements in Man

Author Affiliations

From the Departments of Neurology and Audiology, General Hospital, National Social Security, Mexico City.

Arch Neurol. 1979;36(5):281-284. doi:10.1001/archneur.1979.00500410059008

• A patient wit h a right hemicerebellectomy and recurrence of a tumor on the left cerebellar hemisphere was examined regarding oculomotor and vestibuloocular functions. The findings were as follows: inability to maintain eccentric gaze; defective smooth pursuit system; failure to suppress by visual fixation the nystagmus induced by sinusoidal horizontal rotations; moderate increase of the vestibulo-ocular reflex gain when rotated in the dark; relative preservation of the slow phases of the optokinetic nystagmus, as compared to the slow phases induced by tracking a pendulum; decreased gain of the vestibulo-ocular reflex when rotated with the lights on fixating the environment; square wave jerks; and no saccadic dysmetria.

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