PSYCH 414-4

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414

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Psychology

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Feb 20, 2024

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PSYCH 414-4 What was the faulty assumption of Gall's method? The lumps on the skull reflected the function of underlying brain regions. What did Gall fall captive to? Confirmation bias Was "Tan" affected by Broca's or Wernicke's Aphasia? Broca's Broca's aphasia Inability to produce spoken language What is motor or expressive aphasia? Broca's aphasia What was one hypothesis for Broca's aphasia? Speech production is simply harder than speech comprehension What can cause Wernicke's Aphasia? Back left hemispheric stroke Wernicke's Aphasia Fluent speech production, but speech is often nonsensical or gibberish What is "jargon" aphasia? Wernicke's Aphasia What is Wernicke's aphasia often accompanied by? Difficulty understanding spoken language. Are comprehension and production doubly dissociated? Yes What does double dissociation indicate? Different cognitive functions are supported by independent systems. What are some other double dissociations? (3 others) -Vision (what vs where) -Living things vs manmade objects -Regular vs irregular past tense forms Cognitive neuropsychology using profiles of healthy and brain-damaged people to draw inferences about the functional system underlying some aspect of cognition Principal methods of cognitive neuropsychology -Search for double dissociations of function

-Relate patterns to underlying brain pathway What happened when direct electrical stimulation of the brain occurred? Prompted very vivid random memories EEG Measure electric field outside of scalp and look at fluctuations in electric currents fMRI Measure change in blood oxygen levels throughout the brain -When a neuron fires, it needs more oxygen PET Inject with radioactive glucose; brain emits radiation when active -When neuron fires, it’ll emit glucose

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