The role of the frontal and parietal cortices in visual awareness

额叶和顶叶皮质在视觉意识中的作用

• 批准号: 24700269
• 负责人: TAKAURA Kana
• 金额: $ 2.75万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24700269/
• 关键词: 視覚意識; 前頭・頭頂連合野; 電気生理; ECoG; サル; 視覚情報処理; 国際情報交換、オーストラリア; 視覚; 意識; 脳

To examine the role of the frontal and parietal cortices in visual awareness, we investigated the brain activity and the connectivity among the brain regions in monkeys, using the technique of continuous flash suppression (CFS) and electrocorticogram (ECoG). We simultaneously recorded ECoG signals from almost all the surface of one hemisphere. In the preliminary experiment, we characterized the spatiotemporal profiles of visual responses in the occipitotemporal cortex. We found that the activity in 80-250 Hz (high-gamma band) and the activity in the lower frequency bands were independently informative for learning local cortical activity, which provides a helpful knowledge for better use of ECoG. In the experiment with CFS, we found that the effect of CFS was correlated with the strength of the causal interaction between the frontal eye field and the posterior parietal cortex. Further analysis would provide new insights into the role of the frontoparietal cortices in visual awareness.

为了研究额叶和顶叶皮层在视觉意识中的作用，我们采用连续闪光抑制（CFS）和皮层电图（ECoG）技术，研究了猕猴的大脑活动和脑区之间的连接。我们同时记录了大脑半球几乎所有表面的ECoG信号。在初步实验中，我们的特点是时空轮廓的视觉反应在枕颞叶皮层。我们发现，在80-250 Hz（高伽马波段）的活动和活动在较低的频率带是独立的信息学习局部皮层活动，这提供了一个有用的知识，更好地使用ECoG。在CFS的实验中，我们发现CFS的效果与额叶眼场和后顶叶皮层之间的因果相互作用的强度相关。进一步的分析将为额顶皮层在视觉意识中的作用提供新的见解。

项目成果

Retinotopic organization of the monkey visual cortex studies with electrcorticogram (ECoG) recording

通过皮层电图 (ECoG) 记录研究猴子视觉皮层的视网膜专题组织

• 发表时间: 2013
• 作者: Kana Takaura,Naotsugu Tsuchiya,Naotaka Fujii

Retinotopic organization of the monkey visual cortex studies with electrocorticogram (ECoG) recording

通过皮层电图 (ECoG) 记录研究猴子视觉皮层的视网膜专题组织

• 发表时间: 2013
• 作者: K Takaura;N Tsuchiya;N Fujii
• 通讯作者: N Fujii

Towards the system-level understanding of conscious visual perception: A study with electrocorticogram recording in monkeys under continuous flash suppression

对有意识视觉感知的系统级理解：连续闪光抑制下猴子皮层电图记录的研究

• 发表时间: 2012
• 作者: K Takaura;N Tsuchiya;M Sakagami;N Fujii
• 通讯作者: N Fujii

Mapping retinotopic organization in monkey cortex by independent component analysis on electrocortical signals

通过皮层电信号的独立成分分析绘制猴皮层的视网膜专题组织

• 发表时间: 2013
• 作者: Kana Takaura,Naotsugu Tsuchiya,Naotaka Fujii;Zenas Chao,Kana Takaura,Naotaka Fujii
• 通讯作者: Zenas Chao,Kana Takaura,Naotaka Fujii

Towards the system-level understanding of conscious visual perception : a study with electrocorticogram recording in monkeys under continuous flash suppression

对有意识视觉感知的系统级理解：连续闪光抑制下猴子皮层电图记录的研究

• 发表时间: 2012
• 作者: Z Chao;K Takaura;N Fujii;Kana Takaura,Naotsugu Tsuchiya,Masamichi Sakagami,Naotaka Fujii
• 通讯作者: Kana Takaura,Naotsugu Tsuchiya,Masamichi Sakagami,Naotaka Fujii