Neurology. 1987 Jan;37(1):53-7.

Hyperactive vestibulo-ocular reflex in cerebellar degeneration: pathogenesis and treatment.

Thurston SE, Leigh RJ, Abel LA, Dell'Osso LF.

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Abstract

We studied a patient with a cerebellar degeneration and hyperactive vestibulo-ocular reflex (VOR). He complained of oscillopsia and blurred vision with head movement. A twofold increase in VOR gain (peak eye velocity/peak head velocity) at high frequencies was associated with a VOR time constant of 6 seconds (low normal). Visual cancellation ("suppression") of the VOR and smooth pursuit were also abnormal. We hypothesized that his high VOR gain was due to dysfunction of olivocerebellar projections. Physostigmine reduced his VOR gain, consistent with the hypothesis that these projections are cholinergic.

PMID:: 3796839; [PubMed - indexed for MEDLINE]

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Hyperactive vestibulo-ocular reflex in cerebellar degeneration: pathogenesis and treatment.

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