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Right Hemisphere Capacities For Word-Finding: Bilateral Modulation Of Event-Related Potentials In Healthy Adults And Adults With Aphasia, Amanda C. Alton

Dissertations

Language tasks are typically lateralized to the language dominant left hemisphere in healthy right-handed adults. Additionally, lesions in left frontotemporal areas typically result in a variety of language impairments called aphasia. Interestingly, increased activation in right cerebral regions homologous to left side lesions has been observed in patients with aphasia during word-finding tasks. The neural mechanism and the impact on word-finding remain unclear. There are two competing theories concerning compensatory right hemisphere activation. One view is that the right hemisphere plays a supportive role, taking over functions of the damaged left hemisphere. The other perspective is that rightward laterality is …