The effect of bilateral visual cortex lesions on the development of eye movements and perception

Matthew Rizzo, Richard Hurtig

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

We studied the eye movementa and visual perception in a man with extensive bilateral occipital lesions acquired at birth. He had 3/500 acuity, limited visual fields, and extrafoveal fixation attributable to an intact left superior visual cortex. Analysis of digitized electro-oculography and magnetic search coil data showed normal saccade dynamics. He could make voluntary saccadee. Smooth pursuit of suprathreehold targeta was mostly saccadic and did not improve with added nonvisual cues. Our resulta support the hypothesis that the vieual cortex is crucial to the development of eye movementa. The foveal representation in the occipital lobes, missing in thie subject, is needed for development of normal smooth pursuit.

Original languageEnglish (US)
Pages (from-to)406-413
Number of pages8
JournalNeurology
Volume39
Issue number3
DOIs
StatePublished - Mar 1989

ASJC Scopus subject areas

  • Clinical Neurology

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