Vision After Early-Onset Lesions of the Occipital Cortex: I. Neuropsychological and Psychophysical Studies - Download this document for free, or read online. Document in PDF available to download.

Neural Plasticity - Volume 9 2002, Issue 1, Pages 1-25



Institut de Biologie Cellulaire et de Morphologie, University of Lausanne, Switzerland

Faculty of Psychology and Educational Science, University of Geneva, Switzerland

Dept. of Radiology, Centre Hospitalier Universitaire Vaudois CHUV, Lausanne, Switzerland

Dept. of Pediatric Neurology, Centre Hospitalier Universitaire Vaudois CHUV, Lausanne, Switzerland

Division of Neuroanatomy and Brain Development, Department of Neuroscience, Karolinska Institutet, Stockholm S-17177, Sweden

Institute of Neuroinformatics, University- ETH Zürich, Winterthurerstr 190, Zürich 8057, Switzerland



Copyright © 2002 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We analyzed the visual functions of twopatients MS, FJ with bilateral lesion of theprimary visual cortex, which occurred at gestationalage 33 wk in MS and at postnatal month 7in FJ. In both patients basic visual functions—visual acuity, contrast sensitivity, color, form,motion perception—are similarly preserved ormodestly impaired. Functions requiring highervisual processing, particularly figure-groundsegregation based on textural cues, are severelyimpaired. In MS, studied longitudinally, thedeficits attenuated between the ages of 4.5 and 8y, suggesting that the developing visual systemcan display a considerable degree of adaptiveplasticity several years after the occurrence of alesion. In FJ age 18:9 to 20:6 y, who is moreimpaired, the recovery, if any, was less.





Author: D. C. Kiper, P. Zesiger, P. Maeder, T. Deonna, and G. M. Innocenti

Source: https://www.hindawi.com/

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