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May 1990

Probe-Evoked Potential Findings Following Unilateral Left-Hemisphere Lesions in Children

Author Affiliations

From the Division of Neurosurgery, University of Texas Medical Branch, Galveston (Dr Papanicolaou), and the Departments of Pediatrics (Ms Gillespie and Dr Aram) and Neurology (Mr DiScenna and Dr Aram), Case Western Reserve University, Cleveland, Ohio.

Arch Neurol. 1990;47(5):562-566. doi:10.1001/archneur.1990.00530050086016

• An evoked potentials procedure that has repeatedly provided evidence of predominant right-hemisphere engagement during language tasks in recovered adult aphasics was applied to the study of 14 children with early unilateral left-hemisphere lesions and in 14 matched normal subjects. In contrast with the adult patients, the children with left-hemisphere lesions displayed the normal pattern of predominant left-hemisphere engagement in language and right-hemisphere engagement in visuospatial tasks. These data suggest that language restitution and development following early lesions involves intrahemispheric rather than interhemispheric functional reorganization.

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