Attentional Allocation During the *Perception of Complex Scenes
Gordon, Robert David
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https://hdl.handle.net/2142/82287
Description
Title
Attentional Allocation During the *Perception of Complex Scenes
Author(s)
Gordon, Robert David
Issue Date
1999
Doctoral Committee Chair(s)
Irwin, David E.
Department of Study
Psychology
Discipline
Psychology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Psychology, Cognitive
Language
eng
Abstract
Although the scene processing that occurs on the first fixation on a scene plays a crucial role in the development of a scene representation, this early processing is poorly understood. Inferences about the distribution of attention during the first fixation are often drawn on the basis of eye movement patterns, but attentional allocation during scene perception has not been directly measured. In three experiments, the guidance of attention by semantic content was explored. In Experiments 1 and 3, subjects view briefly presented scenes; during the scene presentation, a spatial probe, to which the subject must respond, is presented at the location of an object that is either consistent or inconsistent with the scene category. The spatial probe serves as an index of attention. The results of Experiment 1 suggest that, for scenes presented for 90 ms or longer, subjects attend preferentially to inconsistent objects. The results of Experiment 2, in which a lexical decision response is primed by the scene category and by the identity of objects within the scene, confirm that very rapid analysis of inconsistent objects does occur within a single fixation. Finally, the results of Experiment 3 suggest that the allocation of attention is influenced both by scene familiarity and expectancy. Implications of the results for scene perception and exploration are discussed.
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