PPT-Unit VI: Perception: Perceptual constancy

Perceptual constancy Stimuli changes object perceived to stay the same In other words Image on retina changes but brain perceives image as being constantunchanging Stimuli changes but . Rules of Perceptual Organization. Gestalt Psychologists. The whole is more than the sum of its parts. Closure. Even if there are gaps in a picture we will see the object. Rules of Perceptual Organization. Unit 1 Psychology – . Visual Perception. What are perceptual constancies?. In vision, perceptual constancy refers to the tendency to perceive an object as remaining stable and unchanging (‘constant’) despite any changes that may occur to the image cast on the retina. . Eesha Sharma, MD. Sense organs. Receptor potential. Generator potential. Psychophysics. Gustav Theodor Fechner, 1860. Quantitative relationship between physical stimuli and the sensations and perceptions they effect. Look closely at the illustration of a seal act for a circus in . the figure below. . What do you see?. Would you have seen it differently without the cue?. You may have identified a seal balancing a ball on its nose with its trainer on the right holding a fish in one hand and a stick in the other. . Imagine that you are outside on a clear night in which there are no clouds, and there is a bright FULL MOON. Pretend that on a table in front of you are objects that range in size from a BB to a beach ball as follows:. Eesha Sharma, MD. Sense organs. Receptor potential. Generator potential. Psychophysics. Gustav Theodor Fechner, 1860. Quantitative relationship between physical stimuli and the sensations and perceptions they effect. http://www.psychologie.tu-dresden.de/i1/kaw/diverses%20Material/www.illusionworks.com/index.html. The . Warped Chair.  by . Ibride. Perception. a process of . organizing and interpreting . sensory information, enabling us to recognize meaningful objects and events. Depth perception enables us to judge . distances.. Humans develop depth perception when they learn to crawl.. 1. Visual Cliff. Innervisions. Binocular Cues. Retinal disparity: . Images from the two eyes differ. . Perception pt. 2. http://www.psychologie.tu-dresden.de/i1/kaw/diverses%20Material/www.illusionworks.com/index.html. http://www.eyetricks.com/scary_optical_illusion2.htm. Difference Thresholds. Any smallest detectable change in a stimulus:. The Object of Perception:. . some things in our environment tend to attract attention. Backgrounds and Surroundings. . our surroundings at the moment of perception will affect our perceptions. The Perceiver. Eesha Sharma, MD. Sense organs. Receptor potential. Generator potential. Psychophysics. Gustav Theodor Fechner, 1860. Quantitative relationship between physical stimuli and the sensations and perceptions they effect. Selective attention. Transduction. Bottom-up processing. Top-down processing. Signal detection . theory. Answer. d). Top-down processing. 2. What principle states that to be perceived as different, two stimuli must differ by a minimum percentage rather than a constant . 1. BB 2. Pea 3. Dime. 4. Penny 5. Nickel 6. Quarter. 7. Golf ball 8. Baseball 9. Softball. 10. Small salad plate 11. Large dinner plate 12. Frisbee. 13. Basketball 14. Beach ball. Please pretend that you are going to pick one of these things that WHEN HELD AT ARM’S LENGTH JUST COVERS UP THE MOON. Imagine that you are picking one that when you hold it in your hand will JUST BARELY COVER UP THE MOON so that you can no longer see it.. Perception. The process of . _________ . and . _________. . information, enabling us to recognize meaningful objects and events.. Stroop Effect. Color words that are written in a different color than the actual word.