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Perception Chapter 6 Visual Attention Flashcards

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1322750835divided attentionPaying attention to more than one thing at a time. Makes it difficult to focus on any one thing.0
1322750837selective attentionignoring some, paying attention to some1
1322750838saccadeseye movements2
1322750840fixationsstops in eye movements (saccades) indicate where the person is attending3
13227508423 Focus Factorscharacteristics, picture meaning/observer knowledge, observer's task4
1322750844characteristics of a scenebrightness, color, salience, visability5
1322750846picture meaning and observer knowledgescene schema, knowledge of what we expect to see in a scene6
1322750849observer's taskwe look where we need to to get something done - task relevant information7
1322750851inattentional biasyou will not perceive something that you are not attending to, even if you are looking right at it8
1322750854change blindnesswe miss changes that we are not specifically looking for9
1322750857precuingparticipant is presented with a "cue" that indicates where a stimulus is most likely to appear.10
1322750860spreading enhancementeffect of attention that may help us perceive occluded objects; experiment by Robert Egly that showed that when attention is directed to one place on an object, the enhancing effect of this attention spreads throughout the object (ex. bars with targets ABCD); see also experiment by Moore et al. (ex. "animal" lurking behind tree)11
1322750863TruePaying attention to a stimulus makes it stand out more. It makes it seem brighter.12
1322750866bindingWhen features such as color, form, motion & location combine to create our perception13
1322750869FFAFusiform Face Area14
1322750872fusiform face areais an area of the visual cortex that specifically responds to and recognizes faces.15
1322750875EBAExtrastriate body area (in the brain).16
1322750878Extrastriate body areaArea of the visual cortex involved in perception of body parts.17
1322750880PPAParahippocampal Place Area18
1322750882Parahippocampal Place AreaPPA is important in encoding and recognizing environmental scenes like place, rooms, or landscapes.`19
1322750884Binding ProblemThe problem confronted by the brain of recombining the elements of a stimulus, given the fact that these elements are initially analyzed separately by different neural systems.20
1322750886feature integration theoryA sequence of steps proposed by Treisman to explain how an object is broken down into features and how these features are recombined to result in a perception of the object.21
1322750887Why Attention is EverythingFocused attention "binds" the features together - Attention is the glue that binds the "what" & "where" streams together In the absence of focused attention, features associated with one object can be incorrectly combined with another. That makes illusions.22
1322750888Illusory ConjunctionsA situation, demonstrated in experiments by Anne Treisman, in which features from different objects are inappropriately combined.23
1322750889Balint's SyndromeA condition caused by brain damage in which a person has difficulty focusing attention on individual objects. (Damage to Parietal Lobe)24
1322750890Synchrony hypothesisthe idea that when an object causes neurons in different parts of the cortex to fire, the timing of the firing of these neurons will be synchronized. This synchrony indicates that all of these neurons are responding to the same object. This idea has been proposed as a solution to the binding problem.25

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