A study was performed in order to investigate how infarcts located in the white matter of the right hemisphere may affect processing of spatial and perceptual abilities. A battery of neuropsychological tests was applied to 7 right-handed patients with CT-verified infarcts of the right internal capsule or periventricular white matter. Examinations were performed 1-3 weeks post stroke and 3-7 months later. The patients were assessed by neurological examinations, EEG, and cortical regional cerebral blood flow (rCBF) measurements. – This study suggested that deep white matter infarcts of the right hemisphere may result in persistent spatial impairment in the absence of decreased cortical rCBF. Perception was disturbed in cases of low mean cortical CBF of both hemispheres.

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