Cognitive NeuroScience 3.27.08

Cognitive NeuroScience 3.27.08 - Cognitive NeuroScience...

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Cognitive NeuroScience 3.27.2008 Talking: Two parts of talking, the auditory aspect of language, one part is the production of language the other part Is the understanding of language. The textbook maps out the different processes that are involved in both. You need to be able to select words involved in different sentences. Need to know how to put these words and sentences into an auditory representation,a dn move our mouths and tongues etc. On the other side we need to be able to process sound, recognize that it is speech, recognize specific words and put them together to form meaning. Understanding language is complex because of the way we space words, what about context? Even if you have a single word it can mean different things. One example of what we need to resolve: video I scream you scream we all scream for ice cream (phonetically they sound the same) Processing sounds is about frequencies: to be able to understand what is being said or to be able to understand sounds in our environment we need to be able to understand frequencies. The entire auditory system including our ears is created so we can identify and tease apart different frequencies, in our inner ear the sensory neurons that detect movement detect it at a specific frequency. The primary auditory cortex, the frequencies that are close together physically in sound are also close together in auditory cortex. Primary auditory cortex= complete deafness Moving away from that there is primary auditory agnosia where you know there are aounds, but you cannot recognize those sounds. Specific to the left hemisphere can lead to word deafness: you are unable to process words, even higher up the words are familiar, you recognize them as words, but you do not know what they mean. Processing language and visual information comes in stages. We tease from the stimuli more and more information and more and more complex presentations. Primary auditory cortex: dorsally is called speech recognition ventral to that the region seems to be involved is semantic knowledge. This connects to broca’s areas. The other pathway goes to This chronological area is connected to prefrontal cortex in a way that enable production of sound, but
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This note was uploaded on 04/07/2008 for the course PSYCH 3903 taught by Professor Repovs during the Spring '08 term at Washington University in St. Louis.

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Cognitive NeuroScience 3.27.08 - Cognitive NeuroScience...

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