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    Attention but not awareness modulates the BOLD signal in the human V1 during binocular suppression (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-11-15
    Description: 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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watanabe, Masataka -- Cheng, Kang -- Murayama, Yusuke -- Ueno, Kenichi -- Asamizuya, Takeshi -- Tanaka, Keiji -- Logothetis, Nikos -- New York, N.Y. -- Science. 2011 Nov 11;334(6057):829-31. doi: 10.1126/science.1203161.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Engineering, University of Tokyo, Tokyo, Japan. watanabe@tuebingen.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22076381" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; *Attention ; *Awareness ; Brain Mapping ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Oxygen/blood ; Photic Stimulation ; Vision, Ocular ; Visual Cortex/*physiology ; Visual Perception/*physiology ; Young Adult
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    The neural basis of intuitive best next-move generation in board game experts (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-01-22
    Description: The superior capability of cognitive experts largely depends on quick automatic processes. To reveal their neural bases, we used functional magnetic resonance imaging to study brain activity of professional and amateur players in a board game named shogi. We found two activations specific to professionals: one in the precuneus of the parietal lobe during perception of board patterns, and the other in the caudate nucleus of the basal ganglia during quick generation of the best next move. Activities at these two sites covaried in relevant tasks. These results suggest that the precuneus-caudate circuit implements the automatic, yet complicated, processes of board-pattern perception and next-move generation in board game experts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wan, Xiaohong -- Nakatani, Hironori -- Ueno, Kenichi -- Asamizuya, Takeshi -- Cheng, Kang -- Tanaka, Keiji -- New York, N.Y. -- Science. 2011 Jan 21;331(6015):341-6. doi: 10.1126/science.1194732.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cognitive Brain Mapping Laboratory, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21252348" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain Mapping ; Caudate Nucleus/*physiology ; Humans ; *Intuition ; Magnetic Resonance Imaging ; Male ; Memory ; Neural Pathways ; Parietal Lobe/*physiology ; Perception ; *Play and Playthings ; Psychomotor Performance ; Reaction Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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    PAPER CURRENT
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