Chapter 4: Object Recognition - Play Psych Mun

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Functional Neuroimaging Studies:• Goal of PET, fMRI studies: : To localize thepsychological process(es) ) of interest• Research design: : Measure brain activity in atleast two conditions: a control (baseline)condition and an experimental condition.– <strong>Psych</strong>ological process localized by subtracting brainactivity in the control (baseline) condition from brainactivity in the experimental condition.
PET Imaging (Posner(&Posner & Raichle, , 1994)Upper row: Control PET scan(resting while looking at staticfixation point) is subtracted fromlooking at a flickeringcheckerboard stimulus positioned5.5°from fixation point.Middle row: Subtractionprocedure produces a somewhatdifferent image for each of 5subjects.Bottom row: The 5 images areaveraged to eliminate noise,producing the image at the bottom.
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Chapter 4: Object Recognition - Play Psych Mun

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