Right hemispheric homologous language pathways negatively predicts poststroke naming recovery
Stroke Jan 08, 2020
Keser Z, et al. - In the United States, stroke is the leading cause of disability; a common sequela after a left hemisphere stroke is aphasia. Given the functional imaging and brain stimulation studies indicating right hemisphere structures as detrimental to aphasia recovery, researchers here studied how homologous language pathways are involved in naming recovery after left hemispheric stroke. Naming assessment was undertaken among patients with aphasia after a left hemispheric stroke using the Boston Naming Test and diffusion tensor imaging was done at the acute and chronic time points. On average, higher deterioration was observed in the structural integrity of left language pathways vs their right homologs, such that there was rightward lateralization in the chronic stage. Preliminary evidence gained indicate the association of preservation of right homologs of language pathways with poor recovery of naming after a left hemispheric stroke. This is in support of the previous evidence that maintaining greater reliance on left hemisphere structures is linked with better language recovery.
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