arcuate fasciculus

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A small bundle of nerve fibres in each cerebral hemisphere that curves round the back of the lateral sulcus and that in the (usually) left hemisphere connects Broca's area with Wernicke's area. Lesions to it often result in conduction aphasia (see under aphasia). See also disconnection syndrome. [From Latin arcuatus bent like a bow, from arcuare to bend like a bow, from arcus a bow + fasciculus a little bundle, diminutive of fasculus a bundle]

Subjects: Psychology.

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