Notes Pt 4.pdf

Language Processing Wednesday, September 4, 2024 6:06 PM - Key language areas ○ Broca area ▪ Location □ In frontal lobe □ Anterior to premotor association area □ In inferior frontal gyrus ▪ Purpose...

Language Processing Wednesday, September 4, 2024 6:06 PM - Key language areas ○ Broca area ▪ Location □ In frontal lobe □ Anterior to premotor association area □ In inferior frontal gyrus ▪ Purpose □ Production of all forms of language □ Spoken, written, signed ○ Wernicke area ▪ Location □ Parietal & temporal lobes □ Around lateral fissure & primary auditory area ▪ Purpose □ Comprehension of language □ Spoken & signed ○ Image Locations ▪ - Connected via arcuate fasciculus ○ It is a subcortical bundle of white matter ○ - Interacting areas ○ Broca area ▪ Contains reciprocal connections w/ frontal lobe □ Used for higher order motor aspects of speech, grammar, syntax Exam 1 Page 1  □ ○ Wernicke area ▪ Contains reciprocal connections w/ parietal & temporal lobe □ Used for vocabulary, map sounds to meanings □ - Hemisphere specializations ○ Language is processed in dominant hemisphere ○ Left hemisphere ▪ Dominant in ~95% of R-handed people, ~65% of L-handed people ○ Non-dominant hemisphere ▪ Used for non-verbal flavor of language □ i.e. tone, emotional significance to language, melody ○ L & R hemisphere language areas connected via corpus callosum - Aphasia ○ Language impaired by brain dysfunction, not disorders that affect language ○ Broca aphasia ▪ Expressive/ motor aphasia □ Deficits in production of language ▪ Symptoms □ Halting language, impaired fluency □ Speech length