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タイトル: | Inter-hemispheric desynchronization of the human MT+ during visually induced motion sickness |
著者: | Miyazaki, Jungo Yamamoto, Hiroki https://orcid.org/0000-0001-9802-1683 (unconfirmed) Ichimura, Yoshikatsu Yamashiro, Hiroyuki Murase, Tomokazu Yamamoto, Tetsuya Umeda, Masahiro Higuchi, Toshihiro |
著者名の別形: | 宮崎, 淳吾 山本, 洋紀 |
キーワード: | Human visual cortex Optokinetic nystagmus (OKN) Vection Functional magnetic resonance imaging (fMRI) Visual motion |
発行日: | 28-May-2015 |
出版者: | Springer Berlin Heidelberg |
誌名: | Experimental Brain Research |
巻: | 233 |
号: | 8 |
開始ページ: | 2421 |
終了ページ: | 2431 |
抄録: | Visually induced motion sickness (VIMS) is triggered in susceptible individuals by stationary viewing of moving visual scenes. VIMS is often preceded by an illusion of self-motion (vection) and/or by inappropriate optokinetic nystagmus (OKN) responses associated with increased activity in the human motion-sensitive middle temporal area (MT+). Neuroimaging studies have reported predominant right hemispheric activation in MT+ during both vection and OKN, suggesting that VIMS may result from desynchronization of activity between left and right MT+ cortices. However, this possibility has not been directly tested. To this end, we presented VIMS-free and VIMS-inducing movies in that order while measuring the temporal correlations between corresponding left and right visual cortices (including MT+) using functional magnetic resonance imaging. The inter-hemispheric correlation was reduced significantly during the viewing of the VIMS-inducing movie compared to the control VIMS-free movie in the MT+ of subjects reporting VIMS, but not in insusceptible subjects. In contrast, there were no significant inter-hemispheric differences within VIMS-free or VIMS-inducing movie exposure for visual area V1, V2, V3, V3A or V7. Our findings provide the first evidence for an association between asynchronous bilateral MT+ activation and VIMS. Desynchronization of left and right MT+ regions may reflect hemispheric asymmetry in the activities of functional networks involved in eye movement control, vection perception and/or postural control. |
記述: | 映像に酔うと右脳と左脳の活動が乖離する現象を発見 -安全で快適な高臨場感映像技術開発の足がかりに-. 京都大学プレスリリース. 2015-05-26. |
著作権等: | The final publication is available at Springer via http://dx.doi.org/10.1007/s00221-015-4312-y. 許諾条件により本文は2016-05-28に公開. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/198117 |
DOI(出版社版): | 10.1007/s00221-015-4312-y |
PubMed ID: | 26014459 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2015-05-26-0 |
出現コレクション: | 学術雑誌掲載論文等 |
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