02 perception-and-cognition - Perception and Cognition...

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Perception and Cognition Brian Bailey
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Announcements Read Norman’s book this week Post ideas to newsgroup Projects and demos last 10 minutes to form project teams
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Recap From Last Time Definition of user interface Three challenges of UI design Want interfaces that have value
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Design Projects Creative, but doable Narrow, but focused Focus on UI, not the system Choose projects that have value Do not shy away from the unfamiliar Implement what you can, simulate what you cannot
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Messages Early work on information theory and AI had profound impact on psychology Model human information processing to simulate interaction, produce guidelines Two important models Hicks Law and Fitts Law
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Historical Context
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Human Information Processing Inspired by information theory in 1940s communication channels, capacities, limits Significant impact on psychology view humans as information processors
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Model Human Processor Sensory processing Perceptual processor seeing hearing Environment Auditory store Visual store Long-term memory Cognitive processor Motor processor Kinesthetic store Motor processing Cognition Attentional resources Active memory chunks Working memory Stimuli ... Sensory stores
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What’s Not in the MHP Haptic processor and memory Kinesthetic (or motor) memory Emotion Attention
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Perceptual System Transform stimuli into symbols locate, recognize, abstract, constancy important for design of visual displays
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Perceptual Processing Constructivist intervention of representations and memories Ecological detect information from the environment
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Perceptual Memory Phonological 1500ms decay time Visuo-spatial 200ms decay Perceptual processing ~100ms
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Principles Gestalt Variable processor rate Encoding specificity Stimulus-response
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Gestalt Perceive objects as patterns Proximity Similarity Closure Continuation
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Gestalt Perceive objects as patterns Proximity Similarity Closure Continuation
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Gestalt Perceive objects as patterns Proximity Similarity Closure Continuation
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Gestalt Perceive objects as patterns Proximity Similarity Closure Continuation
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This note was uploaded on 04/18/2010 for the course CS 465 taught by Professor Karahalios,k during the Fall '08 term at University of Illinois, Urbana Champaign.

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02 perception-and-cognition - Perception and Cognition...

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