PSYC 2220 Study Guide - Final Guide: Spectral Sensitivity, Monochromacy, Test Light
21 Dec 2015
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Michael bach illusions: lilac chase" & stepping feet". Coppola, et al: measured relationship between stimulus (bars with different orientations) and physiological response (brain activity in ferrets) This is called the physiological approach: results: horizontal/vertical line orientations cause larger brain responses than slanted orientations oblique effect (same in humans) Christopher furmanski, et al: measured relationship between perception (task: detecting lines with, brain response larger when detecting horizontals oblique effect different orientations) and physiological response (brain activity in humans) Results: sensitivity increases in 2 phases: initial improvement in sensitivity, then a slower improvement as you spend more time in dark, sensitivity is improving. Cones take center stage when lights go out, but reach their max sensitivity around 3-5 mins, while rods are still adapting and catch up around 7 mins. Then rods becomes more sensitive: to test cone adaptation: place light at fovea (only cones)
