PSYCH 1XX3 Lecture Notes - Lecture 5: The Blind Spot, Action Potential, Change Blindness
9 Feb 2017
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Document Summary
Humans rely more on vision than any other sense. Although it begins with light gathering in the eye, visual processing, of course, occurs in the brain. Goggles seem disoriented for a bit, then the world starts to seem normal after a few days, then once you take them off, the world looks disoriented once again. Perception fills in the void of unattended and missing information. The blind spot is filled in by the context. Blind spot because there are no photoreceptors. Brain will fill in space with the surrounding context. We only pay attention to a limited set of information in the environment. Change blindness: even with directed focus, attention limits lead us to miss information. Attention is a dialogue between bottom up and top down processing. Bottom up processing: basic information processing. Always assume a singular light source, evolved on a planet with only one sun. We assume light source always comes from above.
