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Title: Functional imaging reveals working memory and attention interact to produce the attentional blink
Authors: Johnston, SJ;Linden, DEJ;Shapiro, KL
Keywords: Adult;Attention;Attentional blink;Brain mapping;Female;Humans
Issue Date: 2012
Publisher: Massachusetts Institute of Technology Press
Description: Copyright @ 2012 Massachusetts Institute of Technology Press
If two centrally presented visual stimuli occur within approximately half a second of each other, the second target often fails to be reported correctly. This effect, called the attentional blink (AB; Raymond, J. E., Shapiro, K. L., & Arnell, K. M. Temporary suppression of visual processing in an RSVP task: An attentional blink? Journal of Experimental Psychology, Human Perception and Performance, 18, 849-860, 1992], has been attributed to a resource "bottleneck," likely arising as a failure of attention during encoding into or retrieval from visual working memory (WM). Here we present participants with a hybrid WM-AB study while they undergo fMRI to provide insight into the neural underpinnings of this bottleneck. Consistent with a WM-based bottleneck account, fronto-parietal brain areas exhibited a WM load-dependent modulation of neural responses during the AB task. These results are consistent with the view that WM and attention share a capacity-limited resource and provide insight into the neural structures that underlie resource allocation in tasks requiring joint use of WM and attention.
This research was supported by a project grant (071944) from the Wellcome Trust to Kimron Shapiro.
URI: Journal of Cognitive Neuroscience, 24(1): 28 - 38, Jan 2012
0898-929X
http://www.mitpressjournals.org/doi/abs/10.1162/jocn_a_00054
http://bura.brunel.ac.uk/handle/2438/6534
http://dx.doi.org/10.1162/jocn_a_00054
Appears in Collections:Dept of Life Sciences Research Papers

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