在Pulvinar-V1相互作用中,上下文依赖的注意力聚焦点
Nihong Chen1, Hailin Ai2, Xincheng Lu2
1Department of Psychology, School of Social Sciences, Tsinghua University, Beijing 100084, People's Republic of China; THU-IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, People's Republic of China.
NeuroImage
|August 24, 2023
概括
脉动核通过增强大脑信号与V1的连接来启动空间注意力,特别是在混乱的环境中. 这个过程有助于优先考虑重要的视觉信息,以集中注意力.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 空间注意力就像一个聚光灯,促进处理在参加地点.
- 了解在杂乱的场景中注意力选择的神经机制至关重要.
研究的目的:
- 在集中注意力和分散注意力期间调查脉动核和V1连接.
- 检查拥挤的环境如何影响注意力调节.
- 为了确定注意力中pulvinar-V1相互作用的方向性.
主要方法:
- 使用了功能磁共振成像 (fMRI).
- 研究人员分析了Pulvinar和V1.0之间的背景连接.
- 参与者在不同的拥挤条件下执行了涉及集中和分散注意力的任务.
主要成果:
- 集中注意力显著增强了脉动和V1.1之间的相关性.
- 脉动核启动了这种调制,证明了自上而下的控制.
- 调制的程度受视觉目标的突出程度的影响.
结论:
- Pulvinar在启动注意力选择方面发挥着关键作用,通过重权信息流到V1.
- 这种由pulvinar启动的机制对于在杂乱的视觉环境中导航至关重要.
- 这些发现阐明了空间注意力和信息优先级的神经基础.
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