Sensation and Perception

Sensation and Perception - Sensation and Perception Vision...

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Unformatted text preview: Sensation and Perception Vision, Hearing, Smell, Taste, Touch Measuring Perception Sensation and Perception Detect physical energy and encode neural signals; raw input versus select, organize, and interpret; constructs our experience Discriminating between stimuli suggest perception Habituation Preferential Looking Evoked Potentials measure brain responses Differentiation versus Enrichment Theories Vision QuickTime and a Sorenson Video 3 decompressor are needed to see this picture. Visual Ability (least developed of senses) Vision at… birth 20/ 600, fuzzy, poor visual accommodation, 7-8” 1 mo. stares at faces, begin to differentiate colors (blue from gray, red from green, but not yellow from green or red) 2 mo. follows objects 3 mo. recognizes faces (and scents), 20/100 5 mo. distinguishes between bold colors , color vision is about that of adult 6-12 months adult like accommodation and acuity Visual Preferences Preferences Patterns over simple Measure visual acuity High contrast edges, density increases with age Novel over familiar Curves over lines 3D to 2D Attracted towards movement Orientation towards humans (upper field) Depth perception- The Visual Cliff Depth perception of 2 month old versus 7-8 month old Smell QuickTime and a Sorenson Video 3 decompressor are needed to see this picture. Smelling Neonates can distinguish their mother’s breast pad and the amniotic fluid from that of strangers Comfort from amniotic fluid Respond to certain foods/odors similar to adults Infant Taste QuickTime¯ and a Sorenson Video 3 decompressor are needed to see this picture. Taste Can distinguish sweet, salty, sour and bitter tastes Prefers sweet...
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Sensation and Perception - Sensation and Perception Vision...

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