Traveling EEG slow oscillation along the dorsal attention network initiates spontaneous perceptual switching |
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| Authors: | Takashi J Ozaki Naoyuki Sato Keiichi Kitajo Yoshiaki Someya Kimitaka Anami Hiroaki Mizuhara Seiji Ogawa Yoko Yamaguchi |
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| Institution: | (1) Laboratory for Dynamics of Emergent Intelligence, RIKEN Brain Science Institute, Wako, Saitama, Japan;(2) Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Building No. 2, Room 105A, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan;(3) Department of Complex Systems, School of Systems Information Science, Future University Hakodate, Hakodate, Hokkaido, Japan;(4) Rhythm-based Brain Computation Unit, BSI-Toyota Collaboration Center, RIKEN Brain Science Institute, Wako, Saitama, Japan;(5) Laboratory for Cognitive Brain Mapping, RIKEN Brain Science Institute, Wako, Saitama, Japan;(6) PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama, Japan;(7) Ogawa Laboratories for Brain Function Research, Hamano Life Science Research Foundation, Shinjuku-ku, Tokyo, Japan;(8) Global COE Program Center for Advanced Research on Logic and Science, Keio University, Minato-ku, Tokyo, Japan;(9) Ohmiya Musashino Clinic, Saitama, Saitama, Japan;(10) Department of Intelligence Science and Technology, Graduate School of Informatics, Kyoto University, Kyoto, Kyoto, Japan;(11) Kansei Fukushi Research Center, Tohoku Fukushi University, Sendai, Miyagi, Japan |
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| Abstract: | An ambiguous figure such as the Necker cube causes spontaneous perceptual switching (SPS). The mechanism of SPS in multistable
perception has not yet been determined. Although early psychological studies suggested that SPS may be caused by fatigue or
satiation of orientation, the neural mechanism of SPS is still unknown. Functional magnetic resonance imaging (fMRI) has shown
that the dorsal attention network (DAN), which mainly controls voluntary attention, is involved in bistable perception of
the Necker cube. To determine whether neural dynamics along the DAN cause SPS, we performed simultaneous electroencephalography
(EEG) and fMRI during an SPS task with the Necker cube, with every SPS reported by pressing a button. This EEG–fMRI integrated
analysis showed that (a) 3–4 Hz spectral EEG power modulation at fronto-central, parietal, and centro-parietal electrode sites
sequentially appeared from 750 to 350 ms prior to the button press; and (b) activations correlating with the EEG modulation
traveled along the DAN from the frontal to the parietal regions. These findings suggest that slow oscillation initiates SPS
through global dynamics along the attentional system such as the DAN. |
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| Keywords: | EEG fMRI Simultaneous EEG–fMRI Dorsal attention network Multistable perception Slow oscillation Intrinsic neural dynamics |
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