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The attentional blink modulates activity in the early visual cortex


Hein, G; Alink, A; Kleinschmidt, A; Müller, N G (2009). The attentional blink modulates activity in the early visual cortex. Journal of Cognitive Neuroscience, 21(1):197-206.

Abstract

The attentional blink (AB) documents a particularly strong case of visual attentional competition, in which subjects' ability to identify a second target (T2) is significantly impaired when it is presented with a short SOA after a first target (T1). We used functional magnetic resonance imaging to investigate the impact of the AB on visual activity in individually defined retinotopic representations of the target stimuli. Our results show reduction of neural response in V3 and marginally in V2 and V1, paralleling the behavioral AB effect. Reduction of visual activity was accompanied by reduced neural response in the inferior parietal cortex. This indicates that attentional competition modulates activity in higher-order parietal regions and the early visual cortex, providing a plausible neural basis of the behavioral AB effect.

Abstract

The attentional blink (AB) documents a particularly strong case of visual attentional competition, in which subjects' ability to identify a second target (T2) is significantly impaired when it is presented with a short SOA after a first target (T1). We used functional magnetic resonance imaging to investigate the impact of the AB on visual activity in individually defined retinotopic representations of the target stimuli. Our results show reduction of neural response in V3 and marginally in V2 and V1, paralleling the behavioral AB effect. Reduction of visual activity was accompanied by reduced neural response in the inferior parietal cortex. This indicates that attentional competition modulates activity in higher-order parietal regions and the early visual cortex, providing a plausible neural basis of the behavioral AB effect.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:03 Faculty of Economics > Department of Economics
Dewey Decimal Classification:330 Economics
Language:English
Date:January 2009
Deposited On:17 Mar 2009 09:06
Last Modified:06 Dec 2017 19:06
Publisher:MIT Press
ISSN:0898-929X
Additional Information:Copyright: MIT Press
Publisher DOI:https://doi.org/10.1162/jocn.2008.21026
Official URL:http://www.mitpressjournals.org/doi/pdfplus/10.1162/jocn.2008.21026
PubMed ID:18510438

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