The role of spatial working memory in visual search efficiency |
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| Authors: | Sei-Hwan?Oh Email author" target="_blank">Min-Shik?KimEmail author |
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| Institution: | (1) Department of Clinical Neuroscience, Imperial College London, Charing Cross Hospital, St. Dunstan’s Road, London, W6 8RP, UK;(2) Department of Clinical Neurology, University of Oxford, Level 6, West Wing, John Radcliffe Hospital, Headley Way, Headington, Oxford, OX3 9DU, UK;(3) UCL Institute of Cognitive Neuroscience, Alexandra House, 17 Queen Square, London, WC1N 3AR, UK;(4) Wellcome Trust Centre for Neuroimaging, UCL, 12 Queen Square, London, WC1N 3BG, UK;(5) School of Psychology, Cardiff University, Park Place, Cardiff, CF10 3AT, UK |
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| Abstract: | Many theories have proposed that visual working memory plays an important role in visual search. In contrast, by showing that
a nonspatial working memory load did not interfere with search efficiency, Woodman, Vogel, and Luck (2001) recently proposed
that the role of working memory in visual search is insignificant. However, the visual search process may interfere with spatial
working memory. In the present study, a visual search task was performed concurrently with either a spatial working memory
task (Experiment 1) or a nonspatial working memory task (Experiment 2). We found that the visual search process interfered
with a spatial working memory load, but not with a nonspatial working memory load. These results suggest that there is a distinction
between spatial and nonspatial working memory in terms of interactions with visual search tasks. These results imply that
the visual search process and spatial working memory storage require the same limited-capacity mechanisms. |
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