E. McSorley
Visual search in depth
McSorley, E.; Findlay, J.M.
Authors
J.M. Findlay
Abstract
The accuracy of saccade localisation during visual search was examined for a search target defined by the single features of orientation or depth or by a conjunction of the two features. Subjects were required to move their eyes to the target which appeared in one of eight possible locations, arranged circularly around fixation, with non-targets filling the remaining seven positions. Search for a target defined by a single feature resulted in approximately 70% correct first saccades in both cases, while search for the conjunction target resulted in only 40% correct first saccades. Furthermore, averaged latency for conjunction search was longer than for simple search. Nevertheless, some subjects showed a remarkably good ability to locate a conjunction target with a single saccade of short latency. An analysis of first saccades in terms of their speed and accuracy indicates that the target selection is not preceded by a covert scanning of the display but rather is a result of parallel processing of the visual information provided. We also relate our study to the study of conjunction search reported by Nakayama and Siverman [Nakayama, K., & Silverman, G.H. (1986). Serial and parallel processing of visual feature conjunctions. Nature, 320, 264–265.].
Citation
McSorley, E., & Findlay, J. (2001). Visual search in depth. Vision Research, 41(25-26), 3487-3496. https://doi.org/10.1016/s0042-6989%2801%2900197-3
Journal Article Type | Article |
---|---|
Publication Date | Nov 19, 2001 |
Deposit Date | Apr 5, 2007 |
Journal | Vision Research |
Print ISSN | 0042-6989 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 41 |
Issue | 25-26 |
Pages | 3487-3496 |
DOI | https://doi.org/10.1016/s0042-6989%2801%2900197-3 |
Keywords | Visual search, Conjunction search, Target. |
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