Effects of Repetitive Transcranial Magnetic Stimulation in Aphasic Stroke: A Randomized Controlled Pilot Study
2011
Background and Purpose—Although functional imaging studies suggest that recruitment of contralesional areas hinders optimal functional reorganization in patients with aphasic stroke, only limited evidence is available on the efficacy of noninvasive brain stimulation such as repetitive transcranial magnetic stimulation aimed at suppression of contralateral overactivation. Methods—In this randomized, controlled, blinded pilot study, the effect of 1-Hz repetitive transcranial magnetic stimulation over right-hemispheric Broca homolog in subjects with poststroke aphasia in the subacute stage was examined. According to their group allocation, patients received, in addition to conventional speech and language therapy, multiple sessions of repetitive transcranial magnetic stimulation either over the right-hemispheric inferior frontal gyrus (intervention group) or over the vertex (control group). The primary outcome parameter was the change in laterality indices as quantified by activation positron emission tomogr...
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