05.19_Language3 - Language III Lesions of Brocas area leads...

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© S. J. Luck All rights reserved 1 © S. J. Luck All Rights Reserved Language III • Lesions of Broca’s area leads to Broca’s aphasia (aka production aphasia) • Lesions of Wernicke’s area leads to Wernicke’s aphasia (aka receptive aphasia, Fuent aphasia) Note: These areas are in the left hemisphere in right-handed individuals • Broca’s aphasia was originally characterized as a dif±culty in producing speech • Speech is slow, halted, and uses little grammar (mostly content words, few function words) • Broca’s ±rst case, “Tan,” could say only “tan” and “utter an oath” • Example (from http://www.youtube.com/watch? v=67HMx-TdAZI) • Individuals with Broca’s aphasia can understand language to some extent, and comprehension was originally thought to be unimpaired in these patients • It is now clear that they have problems with syntax: – “The bird who the cat watched was hungry” – Patient must point to appropriate picture – Patient points to picture of hungry cat • How can they comprehend without syntax? – Semantics of words + context • Wernicke’s aphasia is called “Fuent aphasia” because the patients speak at a normal rate and use extensive syntax • Lots of words, spoken at a normal rate, with lots of grammar but little clear meaning
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This note was uploaded on 11/08/2010 for the course PSC PSC100 taught by Professor Luck during the Spring '10 term at UC Davis.

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05.19_Language3 - Language III Lesions of Brocas area leads...

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