PSYC 251 Lecture Notes - Lecture 5: Stimulus Modality, Evoked Potential, The Doughnut
2 Nov 2016
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Attention is: given limited capacity to process competing options, attentional mechanisms select, modulate, and sustain focus on information most relevant for behaviour: problem: How to allocate limited resources in the service of behaviour: importance: We need to prioritize information so we do not waste time and energy on irrelevant efforts: challenge. How to balance the need for selective focus with the need to handle new situations as they arise: characterizing attention. Source: exogenous: in the environment, re exive, automatic, bottom-up , endogenous: in the mind, voluntary, intentional, topdown , target. Internal: mental representations, in the mind: type. Overt vs. covert: transient vs. sustained, selective vs. divided. Characterizing attention source: source: the cause for directing one"s direction. Exogenous: in the environment, re exive, automatic, bottom-up . A salient stimulus, e. g. : a loud clap, a sharp pain, a bright ash, a sudden movement. She told me to focus on the guy in the yellow shirt: target:
