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Integrating space and time in visual search: How the preview benefit is modulated by stereoscopic depth

Dent, Kevin and Braithwaite, Jason J and He, Xun and Humphreys, Glyn W (2012) 'Integrating space and time in visual search: How the preview benefit is modulated by stereoscopic depth.' Vision Research, 65. pp. 45-61. ISSN 0042-6989

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Abstract

We examined visual search for letters that were distributed across both 3 dimensional space, and time. In Experiment 1, when participants had foreknowledge of the depth plane and time interval where targets could appear, search was more efficient if the items could be segmented either by depth or by time (with a 1000. ms preview), and there were increased benefits when the two cues (depth and time) were combined. In Experiments 2 and 3 the target depth plane was always unknown to the participant. In this case, depth cues alone did not facilitate search, though they continued to increase the preview benefit. In Experiment 4 new items in preview search could fall at the same depth as preview items or a new depth. There was a substantial cost to search if the target appeared at a previewed depth. Experiment 5 showed that this cost remained even when participants knew the target would appear at the old depth on 75% of trials. The results indicate that spatial (depth) and temporal cues combine to enhance visual segmentation and selection, and this is accomplished by inhibition of distractors in irrelevant depth planes. © 2012 Elsevier Ltd.

Item Type: Article
Uncontrolled Keywords: Visual search; Preview benefit; Attention; Stereoscopic depth; Surface; Negative carry-over
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculty of Science and Health
Faculty of Science and Health > Psychology, Department of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 06 Jul 2012 13:09
Last Modified: 15 Jan 2022 00:22
URI: http://repository.essex.ac.uk/id/eprint/2818

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