前额叶和感觉皮层中的准备性注意力模板编码了与目标相关的信息
Zhiheng Zhou1,2, Joy Geng2,3
1College of Psychology, Sichuan Normal University, Chengdu, China.
eLife
|September 8, 2025
概括
大脑使用相关信息,而不仅仅是准确的目标细节,为视觉搜索做准备. 在下额前节 (IFJ) 网络中,相关记忆的准备激活引导了注意力.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 视觉感知 视觉感知 视觉感知
背景情况:
- 视觉搜索依赖于工作记忆来引导注意力和决策.
- 下额前节 (IFJ) -视觉注意网络中的"目标模板"通常使用精确的目标特征.
- 行为研究表明,相关信息也可以引导注意力,但缺乏神经证据.
研究的目的:
- 为了调查是否与目标相关的信息在视觉搜索之前在大脑中被明确地表示.
- 为了证明IFJ视觉关注网络中相关信息的准备激活.
主要方法:
- 功能磁共振成像 (fMRI) 和多变量模式分析.
- 参与者学习了面部场景类别的配对.
- 用一个有线索的视觉搜索任务来寻找一个面孔.
主要成果:
- 面部信息在暗示期内在视觉处理区域被解码.
- 相关的场景信息在提示期内被解码到腹侧前额叶皮质.
- 关键的是,相关的场景信息在延迟期间被解码到IFJ和副海马位区域.
结论:
- 这项研究为准备性激活记忆中与目标相关的信息提供了新的证据.
- 相关信息可以在大脑的"目标模板"中表示,以预期视觉搜索.
- 这挑战了只有真实的目标特征构成注意力模板的概念.
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