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Vision After Early-Onset Lesions of the Occipital Cortex: I. Neuropsychological and Psychophysical Studies

Published inNeural plasticity, vol. 9, no. 1, p. 1-25
Publication date2002
Abstract

We analyzed the visual functions of two patients (MS, FJ) with bilateral lesion of the primary visual cortex, which occurred at gestational age 33 wk in MS and at postnatal month 7 in FJ. In both patients basic visual functions-- visual acuity, contrast sensitivity, color, form, motion perceptionare similarly preserved or modestly impaired. Functions requiring higher visual processing, particularly figure-ground segregation based on textural cues, are severely impaired. In MS, studied longitudinally, the deficits attenuated between the ages of 4.5 and 8 y, suggesting that the developing visual system can display a considerable degree of adaptive plasticity several years after the occurrence of a lesion. In FJ (age 18:9 to 20:6 y), who is more impaired, the recovery, if any, was less.

Keywords
  • Visual cortex
  • Plasticity
  • Development
  • Lesion
Citation (ISO format)
KIPER, D.C. et al. Vision After Early-Onset Lesions of the Occipital Cortex: I. Neuropsychological and Psychophysical Studies. In: Neural plasticity, 2002, vol. 9, n° 1, p. 1–25. doi: 10.1155/NP.2002.1
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ISSN of the journal1687-5443
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