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Department of Neurology, University of Luebeck, 23538 Luebeck, Germany
Address for correspondence: H. Rambold, Dept. of Neurology, University of Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany. Voice: +451-500-3709; fax: +451-500-2489. Holger.Rambold{at}neuro.uni-luebeck.de
To address the role of pontine nuclei in vergence control, eye movements to ramp (`slow vergence') and step targets (`fast vergence') were recorded in two patients with unilateral mediolateral pontine infarctions and in ten healthy controls. `Slow' vergence and conjugate smooth pursuit eye movements were impaired while `fast' vergence was not. We conclude that like smooth pursuit signals, vergence signals are distributed in the pontine nuclei.
Key Words: vergence pontine infarction smooth pursuit
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