PSYC 2390 Study Guide - Midterm Guide: Presbyopia, Rhodopsin, Neovascularization
4 Oct 2016
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Document Summary
The light is transformed when it reaches the eye as it is focused by the eye"s optical system. Sensory receptors respond to environmental energy- visual receptors respond to light. When visual receptors that line the back of the eye receive light reflected from the tree they (1) transform environmental energy into electrical energy, and (2) shape perception by the way they respond to visual stimuli. Visual receptors can transform light energy into electrical energy because they contain a light-sensitive chemical called visual pigment which reacts to light. The presence of visual pigment also shapes perception because the ability to see dim light depends on having a high [] of pigment in the receptors. Involves interactions between the signals travelling in the networks of neurons early in the system, in the retina; later, on the pathway to the brain; and finally, within the brain.
