Object Recognition: Top-Down and Bottom-Up Process (Psych/Soc) | Sketchy MCAT

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Object recognition primarily relies on two types of visual processing in the brain: bottom-up and top-down. Bottom-up processing starts with sensory input: visual information is received by photoreceptors and sent to the brain as action potentials. In contrast, top-down processing starts with a preconceived idea about a stimulus might be: the brain relies on the preexisting knowledge and expectations to quickly interpret visual information.


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