PSY 113 Chapter Notes - Chapter 4-5: Psychophysics, Retina, Rhodopsin

• School: URI
• Department: Psychology
• Course: PSY 113
• Professor: Susan Boatright- Horowitz

Document Summary

Perception: organization of visual sensory input, the importance of context, the importance of experience. One receptor is sensitive to the color green, another to the color blue and a third to the color red. One pigment, and so the cones containing that pigment, is most sensitive to wavelengths in the short-wave region of the spectrum. This pigment is sensitive to many inputs but especially sensitive to wavelengths typically perceived as blue. A second pigment is especially sensitive to wavelengths in the middle range (wavelengths typically perceived as green), and the third to wavelengths in the long range (typically perceived as orange or red). Fechner"s law - the observation that the strength of a sensation is proportional to the logarithm of physical stimulus intensity. Gestalt principles - the principles of grouping were first proposed by. Gestalt psychologists to account for the observation that humans naturally perceive objects as organized patterns and objects, a principle known as.