10_brain_and_language

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

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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 Callosumallows communication between the L & R hemispheres Sylvian Fissureseparates 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 Brocas Area- in frontal lobe on language dominant side Wernickes Areawhere 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. Brocas Aphasia CT scan Brocas Aphasia CT scan Brocas Aphasia CT scan Brocas Aphasia CT scan (seen from below, front of head at top, Lang dominant hemisphere on R of picture) Wernickes Aphasic , same viewpoint c.c....
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10_brain_and_language - Language & The Brain 1....

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