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Additive effects of inhibiting attention to objects and locations in three-dimensional displays

By Patrick A. Bourke, Helen Partridge and Petra M.J. Pollux


One of the processes thought to underlie visual selection works by biasing attention away from either recently examined locations or objects. The extent of this “inhibition” is greatest when the inhibited object and the inhibited location coincide. In Experiment 1, rectangles are presented stereoscopically at different depths but at similar positions horizontally and vertically. Here, any inhibition should be based solely on a spatial code, as the objects, the rectangles are clearly separate objects. In Experiment 2, the corners of the rectangles are joined to produce a single cuboid that extends in depth space. Now inhibition based on both spatial and object codes should be seen because even when on different depth planes the cue and target are associated with the same object. Consistent with our understanding of the additive effects of inhibition of space and object codes, the extent of inhibition in the second study is almost double that of the first. The results further suggest that space-based inhibition operates within a two-dimensional representation while object-based inhibition utilizes a three-dimensional representation

Topics: C800 Psychology, C850 Cognitive Psychology, C830 Experimental Psychology
Publisher: Taylor & Francis
Year: 2006
DOI identifier: 10.1080/13506280544000309
OAI identifier: oai:eprints.lincoln.ac.uk:407
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