1. Perception By: Alyssa Beavers, Chris Gordon, Yelena Pham, Hannah Schulte

2. To start off… What is the relationship between sensation and perception? Perception: brings meaning to sensation; interpretation, NOT representation

3. Perceptual Processing Process where sensation becomes perception Feature detector: cells that detect specific stimulus ▫Ex. length, color, boundary ▫Even cells for only human features ▫Binding problem Bottom-Up: perception is driven by stimulus Top-Down: perception is driven by own mind ▫Person may have bias towards something Perceptual Constancies: ability to recognize same object’s qualities under different conditions ▫Color, size, shape

4. Ambiguity and Distortion Illusion: incorrect perception of stimulus pattern ▫Ex. Hermann Grid, Muller-Lyer Illusion, dalmation Ambiguous Figure: images with multiple interpretations; meant to perplex interpretations ▫Ex. Necker Cube, vase/faces Artists, architects, interior designers, theatrical productions, clothes Culture, context

7. Theoretical Explanations Gestalt: Nature ▫Organize stimulation for meaningful patterns ▫See as whole rather than sum of parts Learning-based Inference: Nurture ▫Influences on perception ▫Expectations, context, culture, etc. ▫Stroop Effect- demonstration of a reaction time of a task

8. Gestalt Theory Figure and Ground: the main object of focus vs. a background Closure: making assumptions to complete an incomplete figure Grouping: preference to grouping stimuli together to have percept ▫Similarity, Proximity, Continuity, Common Fate

9. The Laws Law of Similarity: similar objects Law of Proximity: objects near each other Law of Continuity: preference to perceive objects as connected rather than broken Law of Common Fate: share a motion or destination

10. Depth Perception Visual ability to perceive the world in three dimensions and distances of objects

11. Binocular Cues Provides depth information when viewing a scene with both eyes ▫Retinal Disparity: comes from differences of perspective from each eye ▫Convergence: vision lines from eyes meets at different angles at different distances

12. Monocular Cues Provides depth information when viewing a scene with one eye ▫Relative size, light and shadow, interposition, relative motion, atmospheric perspective ▫Accommodation: how the eye muscles change to focus on an object depending on distance ▫Linear Perspective (Ponzo Illusion): parallel lines appear to converge to portray depth/distance

14. Demonstration Time! http://www.david.tam.name/SelfTests/StroopEf fects.htmlhttp://www.david.tam.name/SelfTests/StroopEf fects.html http://en.wikipedia.org/wiki/Rorschach_test

15. Bibliography Depth perception (2012, October 7). Retrieved November 29, 2012, from http://en.wikipedia.org/wiki/Depth_perception (n.d.). Retrieved November 29, 2012, from http://psych.hanover.edu/krantz/art/linear.htm l