PSYCH 120A Chapter Notes - Chapter 3.4: Ponzo Illusion, Retina, Penrose Triangle
Document Summary
One hypothesis: by focusing on relationships within the retinal image, we can achieve constancy in perception. I. e. a dog is half as tall as a chair, this relationship doesn"t change if we move farther away. Size constancy is found even when visual scene offers no basis for comparison provided that other cues signal the distance of the target object. Helmholtz: there"s a simple inverse relationship between distance and retinal image size. True because of the principles of optics. Unconscious inference: unconscious calculation every time we perceive the object"s size. Manipulation of distance info changes perception of object size. Perceptual system takes viewing circumstances into account in a way that enables you to perceive the constant properties of the visual world. Interpretation is an essential part of your perception and generally helps you perceive the world correctly. When you misinterpret info available and end up misperceiving the world .
