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Differential Functional Magnetic Resonance Imaging Language Activation in Twins Discordant for a Left Frontal TumorBrain Research Institute Murdoch Children's Research Institute The University of Melbourne Brain Sciences Institute Swinburne University of Technology
Brain Research Institute Murdoch Children's Research Institute Department of Neurology Royal Children's Hospital, harveys{at}cryptic.rch.unimelb.edu.au, Department of Pediatrics The University of Melbourne, Department of Neurology Austin and Repatriation Medical Center
Brain Research Institute Department of Paediatrics The University of Melbourne, Department of Neuropsychology Austin and Repatriation Medical Centre
Brain Research Institute Murdoch Children's Research Institute Department of Psychology The University of Melbourne
Department of Medical Imaging Royal Children's Hospital Howard Florey Institute
Murdoch Children's Research Institute Department of Psychology The University of Melbourne
Brain Research Institute
Brain Research Institute Department of Paediatrics The University of Melbourne
Brain Research Institute Brain Sciences Institute Swinburne University of Technology
Brain Research Institute Department of Medicine The University of Melbourne Melbourne, Australia Eight-year-old twins, one with a left frontal tumor and aphasic seizures, the other neurologically normal, underwent serial assessment of expressive language with functional magnetic resonance imaging and neuropsychology. The affected twin showed a significant amount of right hemisphere activation coincident with behavioral deterioration in expressive language and late growth in the tumor. This pattern of language dysfunction and the left language dominance of her co-twin suggested that the affected twin was also left dominant for language, and the significance of her right activation is discussed. We postulate that the right hemisphere activation represents a stabilizing mechanism in the context of a developmental and progressive lesion in language cortex rather than language transfer per se. (J Child Neurol 2002;17:766—769).
Journal of Child Neurology, Vol. 17, No. 10,
766-769 (2002) |
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