Gibson's Visual Perception
- Created by: katielou
- Created on: 12-04-19 11:54
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- Direct Visual Perception & Action
- Perception = cognitive process where we make sense of info provided by sense organs
- GIBSON'S THEORY OF DIRECT PERCEPTION/ Ecological Theory = action driven (point is to enable interactions with world)
- Bottom up approach - take info about environment directly from light waves
- Ambient Optic Array: Light waves are refracted off textures surfaces, and this patter contains all visual info needed to perceive - as we move, OA changes
- Invariant Features: features in environment that never change, eg texture gradient (depth increases with distance) and horizon-ratio relaation (ratio above & below horizon is constant for same size objects)
- Optic Flow: changes in flow = type of movement - moving to pole = outflow, moving backwards from pole = inflow
- Affordance: cues in environment which don't rely on stored info - can know just by looking. Eg chair affords sitting, mug handle affords grasping etc
- Evaluation: +High ecological validity (no 2D lab experiment), -Doesn't specify how we pick up info from optic array, - Reductionist, perceive only through environment not memory
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