10_brain_and_language

10_brain_and_language - Language& The Brain 1 Structure...

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Unformatted text preview: Language & The Brain 1. Structure of the brain A. General structures A. General structures A. General structures A. General structures • Frontal Lobe • Temporal Lobe • Parietal Lobe • Occipital Lobe • Corpus Callosum—allows communication between the L & R hemispheres • Sylvian Fissure—separates the temporal lobe • Motor Cortex-location of motor and muscle control • Contralateral control B. Language Centers B. Language Centers B. Language Centers B. Language Centers • Left Hemisphere language dominance • Broca’s Area- in frontal lobe on language dominant side • Wernicke’s Area—where upper temporal lobe joins the parietal lobe on language dominant side. 2. Types of Evidence for language centers of the brain a. Aphasias - Disruption of core language functions as a result of injury to the brain. b. Clinical Procedures- Different medical procedures are used in hospitals to attempt to localize brain injuries • Sodium Amytal Injection-- injecting into L or R cartoid artery, which induces paralysis on the opposite site of brain. If there is resulting aphasic behavior, this shows the language-dominant hemisphere • Computer-assisted tomography (CAT/CT scanning)—used to analyze & map brain function via electronic sensors. -- combined with PET and MRI scans to look at brain behavior during tasks, to pinpoint regions involved & language dominant hemisphere. Broca’s Aphasia CT scan Broca’s Aphasia CT scan Broca’s Aphasia CT scan Broca’s Aphasia CT scan (seen from below, front of head at top, Lang dominant hemisphere on R of picture) Wernicke’s Aphasic , same viewpoint c.c....
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This note was uploaded on 04/07/2008 for the course ENG 01 taught by Professor Orgun during the Winter '08 term at UC Davis.

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10_brain_and_language - Language& The Brain 1 Structure...

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