PSYC 102 Chapter Notes - Chapter 3: Mach Bands, Lateral Inhibition, Limulus
Document Summary
Chapter 3 notes- neural processing and perception neural processing- interaction of signals in many neurons. Lateral inhibition- inhibition that is transmitted across the retina. Eyes made up of ommatida structures which each have a small lens on eye"s surface and are directly located over a single receptor. Makes it possible to stimulate a single receptor without illuminating others. Illumination of 1 receptor causes large response, but illuminating neighbors too a decreased response (stimulating surrounding receptors inhibits around it causes firing of one) Perception of lightness- perception of shades ranging from white to grey to black. Hermann grid- gray spots that appear in white intersections when looking at black boxes separated by white lines. If look at center directly, receptors around that take info are also seeing white (all receiving middle one equal high signals), and lateral inhibition from each surrounding receptor makes appear darker.
