04-02 Lecture Slides (Final)

How the cube sides puzzle complex paper folding

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Unformatted text preview: sual Imagery (1) Mental images are biased toward specific interpretations Changing interpretations is more difficult for imagery than for perception ¨༊  Example: ¨༊  n༆  Ambiguous figures Rabbit? Duck? Non- Picture- Like Properties of Visual Imagery (2) Mental images are often distorted Which is further east: Reno or San Diego? Mental images may not always be an accurate copy ¨༊  Example: ¨༊  n༆  Distortions in mental maps Answer: Reno Answer: San Diego 5 4/2/13 Non- Picture- Like Properties of Visual Imagery (2) Mental images are often distorted Mental images may not always be an accurate copy ¨༊  Example: What is the first foreign country you would come to if you travel due south from Detroit? ¨༊  n༆  Distortions in mental maps Answer: Canada Non- Picture- Like Properties of Visual Imagery (3) Mental images are susceptible to “capacity limitations” of the human cognitive system The amount of details one can maintain in a mental image is limited ¨༊  Examples: ¨༊  n༆  n༆  n༆  Imagine a 3” x 3” x 3” cube ¨༊  Paint it red ¨༊  Cut into small 1” cubes many of them have 1 side painted red? ¨༊  How The “cube sides” puzzle Complex paper folding Picture- Like & Non- Picture- Like Properties of Visual Imagery: An Interim Summary n༆  Mental images show both picture- like and non- picture- like properties ¨༊  Mental imagery is closely tied to both perception and memory Mental Imagery Perception n༆  Memory Evidence from cognitive neuroscience is also consistent with the above conclusion: ¨༊  The neural basis of visual Imagery overlaps considerably with that of visual perception, but they are not the same 6 4/2/13 Evidence from Cognitive Neuroscience n༆  Visual imagery tasks activate the brain areas related to perception, even in the absence of any visual stimuli ¨༊  Functional neuroimaging n༆  LiBihan et al.’s (1993) fMRI study n༆  O’Craven & Kanwisher’s (2000) fMRI study Functional Magnetic Resonance Imaging (fMRI) scanner (tracks b...
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This note was uploaded on 02/18/2014 for the course PSYC 2145 taught by Professor Cheriking during the Spring '07 term at Colorado.

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