The Ecological Approach to Visual Perception
- Created by: Chloe
- Created on: 24-04-15 14:27
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- The Ecological Approach to Visual Cognition
- Gibson's theory
- • First developed in WW11 •Optic flow patterns: a fixed point, the pilot moving appears motionless while the rest of the visual environment is moving away from the fixed point
- • As we move through the visual world the image on the retina changes • The optic array of most surfaces continuously changes with the viewers movement
- Basic principles of theory
- (1) Enough into about the spatial layout of the environment is picked up directly, rather than as a result of processing & analysing various distance & depth cues
- (2) Info for depth & distance is contained fully within the optic array projected on the eyes
- Therefore.. no interpretation or evaluation of spatial cues is needed as the optic array provides into which enables the perception of the visual world
- • First developed in WW11 •Optic flow patterns: a fixed point, the pilot moving appears motionless while the rest of the visual environment is moving away from the fixed point
- Invariants
- Optic flow patterns: the pattern of the array remains constant as the observer moves
- Motion perspective: the relative distance of objects remains constant
- Texture gradients: •Increasing distance = texture elements appear finer or denser • Decreasing distance = texture elements appear coarser
- Traditional Theory: •perception is indirect & influenced by higher cognitive processes • We don't "just see" the world but actively construct it from perceptual info we receive
- Gibsons theory: Perception is direct & not mediated by inference or problem solving
- Gibson's theory
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