Vision After Early-Onset Lesions of the Occipital Cortex: I. Neuropsychological and Psychophysical Studies. Issue 1 (2002)

• Record Type: Journal Article
• Authors: Kiper, D. C.; Zesiger, P.; Maeder, P.; Deonna, T.; Innocenti, G. M.
• Is Part Of: Neural plasticity. Volume 9:Issue 1(2002)
• Page Start: 1
• Page End: 25
• Publication Date: 2002
• Subjects: Neuroplasticity -- Periodicals; 612.82
• DOI: 10.1155/NP.2002.1
• Languages: English
• ISSNs: 2090-5904

Abstract

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 perception—are 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.