attention_vissearch_1_

attention_vissearch_1_ - 1 Attention and Automaticity 2...

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Unformatted text preview: 1 Attention and Automaticity 2 Attention: The glue that holds everything together Perception involves making sense out of visual inputs Depth, motion, and form perception require that 1. We recognize rules about space and form 2. We keep these rules active while perceiving objects 3. We use these rules to organize sensory input Attention : ability to hold rules in mind and actively use rules to organize information Is a higher-order property of thought (i.e., involved in more than just perception) Represents the organizing principles, keeps them active, and does the actual organizing Is a resource that varies from person to person 3 Roles of Attention in Perception 1. Attention prepares us for what we are about to perceive 1. Attention allows us to select some aspects of a scene while ignoring others 1. Attention helps us to bind information together to create a unified perceptual experience 4 5 Divided Attention Dichotic Listening Task Stereo headphones Different message to each ear Shadowing Repeat speech presented in one of two ears How much of the unattended channel is processed by subjects? 6 Selection of Attention Unattended channel: Subjects noticed physical changes (i.e., frequency, loudness) Attended channel: Subjects noticed changes in language, semantics, etc. 7 Where does selection occur? Before attention selection: Unlimited capacity All incoming information is processed After attention selection: Capacity is limited Only selected information is processed Locus of selection = bottleneck of information processing 8 Attention is expensive!!!! Attention is a resource that has limits Based on the complexity of the information that were considering If attentional focus only minimally used, then we can perceive extraneous input If attentional focus exhausted, then there are limits...
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attention_vissearch_1_ - 1 Attention and Automaticity 2...

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