PSYC 213 - Chapter 9

PSYC 213 - Chapter 9 - VISUAL IMAGERY experience images...

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VISUAL IMAGERY experience images when visual stimuli impinge on receptors mental imagery: experiencing a sensory impression in the absense of sensory input visual imagery : "seeing" in absense of visual stimulus (imagining your house) possible for other senses: inner audition = orchestra conductors imagine a musical score in minds both scientific insights and practical applications Historical Perspective Wundt: images are one of the basic elements of consciousness gave rise to imageless thought debate: is it possible to think without images? Galton: ppl w/ difficulty forming images can still think Watson: behaviourist; who cares? The Cognitive Revolution came along Pavio used paired association learning: study phase = pairs of words presented; test phase = presented with one word of pair, must remember the other memory for pairs of concrete nouns (which create images) was better Conceptual Peg Hypothesis: conrete nouns create images that other words can "hang onto" Shepard + Meltzer mental chronometry: the determination of the time needed to carry out various cognitive tasks mental rotation experiment proved link b/w perception and imagery quantitative study Imagery and Perception share many properties there is spatial correspondence b/w imagery and perception (spatial experience matches the layout of actual stimulus) Mental Scanning aked to create a mental image and scan it in imagery, like perception, it took participants longer to find parts that are located farther from the initial pt could this be b/c along the way, participants discovered and analysed other interesting things? no. experiment where there is nothing in between. time corresponds to distance Imagery Debate is imagery based on spatial mechanisms (like perception) or language mechanisms? Spatial Representation: different parts of an image can be described as corresponding to specific locations in space represented by pictures called depictive representations but just b/c we experience imagery as spatial, doesn't mean the underlying mechanisms are! these spatial experiences could be an epiphenomenon: something that accompanies the real mechanism but is not actually part of the mechanism P ropositional mechanisms: relationships can be represented by symbols, as when the words of a language represent objects and relationships b/w objects similar to semantic networks 1
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see Pg. 330 for diagram tacit-knowledge explanation: participants unconsciously use knowledge about the world in making their judgments. when asked to imagine scene, ppl stimulate as many aspects as possible, including the
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This note was uploaded on 02/13/2011 for the course PSYC 213 taught by Professor Levitin during the Winter '08 term at McGill.

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PSYC 213 - Chapter 9 - VISUAL IMAGERY experience images...

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