120Alecture7handout

120Alecture7handout - MentalImagery Whatarementalimages?

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Mental Imagery What are mental images? What is an alternative explanation? The imagery debate! Experimental results
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Tasks that might involve imagery How many windows are there in your parents’ house? How do you tie your shoe? Letter tracing *
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What are mental images? A kind of mental representation, sharing certain properties with pictures: 1) Changes with viewpoint 2) Empty space explicitly represented 3) Perceived using spatial attention Experimental evidence exists for each
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What are not mental images? Symbolic, or linguistic representations e.g. Structural description List of Features and Relationships e.g. Dog: Pointy ears on-top-of head Head on-top-of body Four legs beneath body Fur covering ears, legs, body List of facts can not be rotated, etc .
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The Imagery Debate This refers to two differing viewpoints as to the exact nature of (visual) images The Analog Viewpoint : Visual mental images are analogous to pictures in the head. Championed by Stephen Kosslyn
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120Alecture7handout - MentalImagery Whatarementalimages?

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