transcortical aphasia

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A generic term for transcortical motor aphasia, transcortical sensory aphasia, and mixed transcortical aphasia, all of which arise from lesions interfering with the transmission of nerve impulses across the cerebral cortex between the language and motor centres, leading to impairment of spontaneous speech with intact ability to repeat spoken language. See aphasia. Also called ideomotor aphasia.

Subjects: Psychology.

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