PSYB51H3 Chapter 8: PSYB51 Chapter 8

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The retinal array contains far more information than we can process. Processing everything, everywhere, all at once requires a brain that will not fit into the human had. Any of the very large set of selective processes in the brain. To deal with the impossibility of handling all inputs at once, the nervous system has evolved mechanisms that are able to restrict processing to a subset of things, places, ideas, or moments in time. overt attention, covert attention, divided attention, sustained attention. The form of attention involved in processing is restricted to a subset of the possible stimuli. Potential mechanisms operate in all of is the senses. A queuing experiment by michael pozner in which an individual fixates on a central point and must respond as soon as possible when a probe appears. the measure of interest is the average reaction time (a measure of the time from the onset of a stimulus to a response)