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  The Magnitude of Binocular Disparity Modulates Search Time for Targets Defined by a Conjunction of Depth and Colour

de la Rosa, S., Moraglia, G., & Schneider, B. (2008). The Magnitude of Binocular Disparity Modulates Search Time for Targets Defined by a Conjunction of Depth and Colour. Canadian Journal of Experimental Psychology, 62(3), 150-155. doi:10.1037/1196-1961.62.3.150.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C71F-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-2D14-5
Genre: Journal Article

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de la Rosa, S1, Author              
Moraglia, G, Author
Schneider, B, Author
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1External Organizations, ou_persistent22              

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 Abstract: Nakayama and Silverman (1986) proposed that, when searching for a target defined by a conjunction of color and stereoscopic depth, observers partition 3D space into separate depth planes and then rapidly search each such plane in turn, thereby turning a conjunctive search into a "feature" search. In their study, they found, consistent with their hypothesis, shallow search slopes when searching depth planes separated by large binocular disparities. Here, the authors investigated whether the search slope depends upon the extent of the stereoscopically induced separation between the planes to be searched (i.e., upon the magnitude of the binocular disparity. The obtained slope shows that (1) a rapid search only occurs with disparities greater than 6 min of arc, a value that vastly exceeds the stereo threshold, and that (2) the steepness of this slope increases in a major way at lower disparities. The ability to implement the search mode envisaged by Nakayama and Silverman is thus clearly limited to large disparit ies; less efficient search strategies are mandated by lower disparity values, as under such conditions items from one depth plane may be more likely to "intrude" upon the other.

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 Dates: 2008-09
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1037/1196-1961.62.3.150
BibTex Citekey: 5269
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Title: Canadian Journal of Experimental Psychology
Source Genre: Journal
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Publ. Info: American Psychological Association (PsycARTICLES)
Pages: - Volume / Issue: 62 (3) Sequence Number: - Start / End Page: 150 - 155 Identifier: ISSN: 1196-1961
CoNE: https://pure.mpg.de/cone/journals/resource/954925612990