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

Autor: D. C. Kiper, P. Zesiger, P. Maeder, T. Deonna, G. M. Innocenti
Jazyk: angličtina
Rok vydání: 2002
Předmět:
Zdroj: Neural Plasticity, Vol 9, Iss 1, Pp 1-25 (2002)
Druh dokumentu: article
ISSN: 2090-5904
1687-5443
DOI: 10.1155/NP.2002.1
Popis: 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.
Databáze: Directory of Open Access Journals
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