lec08-2 - Functional Role of Imagery in Information...

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Functional Role of Imagery in Information Processing Psychology 355: Cognitive Psychology Winter Quarter 2009 2/25/2009
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P 355, Miyamoto, Winter '09 2 Outline • Priming with Images • Evidence for the Functional Role of Imagery o TMS – Causal Neuropsychological Evidence o Dissociations in Neuropsychological Impairments
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P 355, Miyamoto, Winter '09 3 Images Can Act as Primes for Real Visual Displays Step (a): Create mental image of H or T while staring at a blank screen. Step (b): When subject had formed a good image, subject presses a button that causes 2 screens to be displayed one after the other. One screen has an H or a T, the other screen is blank. Task: Say whether the letter was on the 1 st or the 2 nd screen. Farah, M. J. (1985). Psychophysical evidence for a shared representational medium for mental images and percepts. Journal of Experimental Psychology: General, 114, 91-103.
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P 355, Miyamoto, Winter '09 4 Results: Images Can Act as Primes for Real Visual Displays Results: When mental image is same as target, percent correct response is higher. Interpretation: Forming the mental image facilitates identification of target order, i.e., priming has occurred. Farah, M. J. (1985). Psychophysical evidence for a shared representational medium for mental images and percepts. Journal of Experimental Psychology: General, 114, 91-103.
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P 355, Miyamoto, Winter '09 5 Summary So Far . ... • Behavioral studies ( mental rotation, mental scanning, effects of image size, priming, etc. ) o Results are easy to explain if we assume that people use mental images to perform tasks; o Results are hard to explain if we assume that people use propositional representations exclusively. o
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This note was uploaded on 10/05/2009 for the course PSYCH 355 taught by Professor Miyamoto during the Winter '08 term at University of Washington.

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lec08-2 - Functional Role of Imagery in Information...

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