Conduction aphasia , also called associative aphasia , is an uncommon form of difficulty in speaking aphasia. It is caused by damage to the parietal lobe of the brain. An acquired language disorder , it is characterised by intact auditory comprehension, coherent yet paraphasic speech production , but poor speech repetition. Affected people are fully capable of understanding what they are hearing, but fail to encode phonological information for production.
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Paysant, N. Martinet, J. Beis, L. Le Chapelain. Journal page Archives Contents list. Lemesle, E. Manceau, G. Osseby, N. Madinier-Chappart, Th. Moreau, M. Article Article Outline. Access to the text HTML. Access to the PDF text.
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The arcuate fasciculus has been the most frequently suggested site of such a disconnection, but the syndrome has been reported in cases in which the abnormality involved the dominant Wernicke's area. This challenges the arcuate fasciculus theory, and it has been suggested that a cortical lesion, not a disconnection, is the crucial factor. Three new cases in which the lesion does not lie in the arcuate fasciculus are reported, two in left-handed patients with left temporoparietal lesions and one in a righthanded patient with a right temporoparietal infarct, a "crossed" aphasia. While atypical, these cases offer evidence that disconnection of the circuit linking language comprehension to motor speech output, not damage to a specific cortical region, underlies the syndrome of conduction aphasia. Arch Neurol. Coronavirus Resource Center. All Rights Reserved.
Paysant, N. Martinet, J. Beis, L. Le Chapelain.