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  Attention But Not Awareness Modulates the BOLD Signal in the Human V1 During Binocular Suppression

Watanabe, M., Cheng, K., Murayama, Y., Ueno, K., Asamizuya, T., Tanaka, K., et al. (2011). Attention But Not Awareness Modulates the BOLD Signal in the Human V1 During Binocular Suppression. Science, 334(6057), 829-831. doi:10.1126/science.1203161.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-B8F8-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-AFA9-C
Genre: Journal Article

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 Creators:
Watanabe, M1, 2, Author              
Cheng, K, Author
Murayama, Y1, 2, Author              
Ueno, K, Author
Asamizuya, T, Author
Tanaka, K, Author
Logothetis, NK1, 2, Author              
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Although recent psychophysical studies indicate that visual awareness and top-down attention are two distinct processes, it is not clear how they are neurally dissociated in the visual system. Using a two-by-two factorial functional magnetic resonance imaging design with binocular suppression, we found that the visibility or invisibility of a visual target led to only nonsignificant blood oxygenation level–dependent (BOLD) effects in the human primary visual cortex (V1). Directing attention toward and away from the target had much larger and robust effects across all study participants. The difference in the lower-level limit of BOLD activation between attention and awareness illustrates dissociated neural correlates of the two processes. Our results agree with previously reported V1 BOLD effects on attention, while they invite a reconsideration of the functional role of V1 in visual awareness.

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 Dates: 2011-11
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1126/science.1203161
BibTex Citekey: WatanabeCMUATL2011
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Title: Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 334 (6057) Sequence Number: - Start / End Page: 829 - 831 Identifier: ISSN: 0036-8075
CoNE: /journals/resource/991042748276600_1