CAS PS 222 Study Guide - Motion Aftereffect, Agnosia, Biological Motion
2 Apr 2014
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Document Summary
Attention is: divided attention- the limited ability of paying attention to more than one thing at a time. Example: driving and texting- don"t mix. Selective attention- focusing on specific objects and filtering out others: visual system constructed this way. Too much information for the retina to handle. Saliency maps show these properties are fixed on: scene schema- prior knowledge about what is found in typical scenes. Factors determining location of fixations. Inattentional blindness- stimulus not perceived even when the person directly looks at it. These signals combine to form a unified percept. Preattentive stage- features of objects separated. Focused attention stage- features combined into coherent perception. Attention is glue for what and where streams. Physiology of attention: colby et al. experiment, monkey fixates on dot while peripheral light flashed on the right. Fixation only condition: keep eyes fixated and release lever when dot dimmed. Fixation and attention condition: keep eyes fixated and release lever when peripheral light dimmed.
