PSYCHOLOGICAL IMPAIRMENT IN WILSONʼS DISEASE

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Abstract
Evidence for loss in the capacity for conceptual thinking was found in all cases. In addition, a lowered flicker frequency threshold and a prolonged after-image time suggested that lesions in the cerebral cortex were also present. The accuracy of simple visual pattern perception and the size of the visual span of attention was similar to that in normal subjects. The possible value of psychological tests in revealing a cryptic neurological component in patients with Wilson''s disease in whom a clinical neurological examination is negative is discussed.