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Twenty patients with constructional apraxia, their only neuropsychological impairment, were examined. On the basis of CT-findings it could be shown that the syndrome is very close connected with lesions of the right hemisphere of the brain (parietal brain-cortical and subcortical-and parieto-occipital border areas).
P 100 latency of the pattern-reversal visual evoked response in 65 patients with definite multiple sclerosis was compared with normative data derived from 65 control subjects. On the basis of the results of distribution analyses it could be concluded that in definite multiple sclerosis there is visual system involvement in all patients, even if their P 100… (More)
Ten right-handed patients suffering from visuospatial impairment were examined. The impairment was ascertained by a test requiring visual organization (picture completion). The patients did not suffer from other neuropsychological disorders (e.g., aphasia, dementia). Furthermore, psychiatric symptoms and defective oculomotion (gaze paresis, ocular paresis)… (More)
P2 latency of the flash visual evoked potential was found not to be prolonged in 13 demented patients compared to age normative predictions derived from a control group. This finding contrasts with a number of studies of demented patients that found P2 latency to exceed normative data. It was stated that the result of normal latency in dementia can hardly… (More)