PSY280H1 Lecture 6: lecture 7 - attention

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13 Feb 2019
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What is attention: attention a large set of selective processes in the brain that can. Make us more (or less) sensitive to stimulation. Exist in every modality: varieties of attention, selective, sustained, divided, external. Factors from you (top-down) you are acting on your prior knowledges. Factors from the world (bottom-up) things that are salient to us. Top-down attention: dependent on prior knowledge or task, determined by behavioural relevance, volition controlled, slower deployment. Other properties require attention: pre-attentive stage, can guide attention to likely places where the target can be, more efficient, less processing of sensory information, binding. Illusory conjunctions pre-attentive features are free-floating until they are bounded together by spatial attention: scene-based guidance information in our understanding of scenes that helps us find specific objects in scenes, eg. Finding faucets in a kitchen: find tumors, baggage screening. Target of attention: spatial attention, feature-based attention attention can enhance the processing of a specific feature which can lead to different perceptions.

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