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B65 Lec 10 Language.docx

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Michael Inzlicht

B65 LECTURE #10: Language Organization Within Left Hemisphere Types of Aphasias • RECEPTIVE aphasias: o Problems with understanding/decoding lang o Temporal • INTEGRATIVE aphasias: o Problems with comprehension and formation o posterior temporal (Wernicke’s) • EXPRESSIVE aphasias: o Speaking, producing lang o Frontal (motor cortex) o Area just ventral of motor strip for mouth Broca’s area is the associational area Testing • Name objects (what is this? It’s a key) o Test prod/expressive • Obey commands (ex. Point to door, point to window) o Tests comprehension bc it’s just pointing, don’t need to speak • Ask them to read, write • Ask them to repeat after you Receptive Aphasias • Pure Word Deafness: o Problems in relating incoming sounds into representations which allow the understanding of discourse o All lang sounds like a foreign lang to them o Can read, write, speak, understand enviro sounds, though o Damage to primary receptive area in temporal lobe o Don’t realize they have a deficit at first, but catch on after a while Integrative Aphasia: • Problems in selecting and arranging meaningful units and their eventual conversion into comprehensible coherent speech • Wernicke’s Aphasia = Jargon Aphasia: o Person just doesn’t make sense, meaningless, unintelligible. But fluent (not gibberish) o Chatter a lot, though o Words are kind of in the right order actually and they include the prosody components, they just don’t make sense overall o In very severe cases though, they won’t even be using English words. But it’ll sound like a foreign language to us because the prosody is still intact. o Usually cannot name objects well, but depending on the severity, they might be close o But they know how to USE objects properly o They know what things are, they just can’t convey what they know o Respond very poorly to commands o Unable to repeat, unless it is a very short, familiar quip  Ex. On the other hand, how are you o Make silly errors on IQ tests, so it seems like they have lower IQ o Can sing but might throw in odd phrases, mess it up o Can’t really comp what they’re reading, but they can read aloud quite well o They can write, but they’ll write in the same meaningless manner as they speak o Not typically upset about their deficit though o Inner voice also gone! • Nominal Aphasia = Anomia: o Can’t name things (nouns) o Damage to angular gyrus (which i
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