类别 - - 在视觉皮层中选择性地表示关系
1Institut des Sciences Cognitives-Marc Jeannerod, UMR5229, Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1, Bron 69675, France etienne.abassi@gmail.com liuba.papeo@isc.cnrs.fr.
概括
视觉皮层通过表示人与物体之间的关系来处理社会互动. 不同的大脑网络编码这些关系,显示特定类别的组织和跨类别的概括.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 社会互动的理解依赖于处理代理和它们之间的关系.
- 在更高层次的视觉区域中,视觉处理编码了超越个体表示的新兴交互信息.
- 对交互感知的神经标记是对面对面对背对背的个体视觉区域反应的增加.
研究的目的:
- 研究负责视觉关系信息的神经网络的组织.
- 确定关系信息处理是否在视觉皮层内是特定类别的.
- 在不同类别 (面孔,身体,物体) 中探索关系信息的概括.
主要方法:
- 功能磁共振成像 (fMRI) 用于测量42名健康成年人的大脑活动.
- 参与者看了两个脸或两个身体的图像,要么面对对方,要么远离对方.
- "面对>非面对"效应作为关系感知的签名.
主要成果:
- 为了处理面孔之间的关系和身体之间的关系,确定了不同的视觉区域,反映了已知的类别选择性.
- 发现了第三个非社会对象之间的网络处理关系的证据.
- 一个单独的 occipitotemporal 网络展示了面孔,身体和物体之间的关系信息的概括.
结论:
- 视觉皮层以一种类别选择的方式编码实体之间的关系,坚持高级视觉的核心组织原则.
- 这种视觉关系处理有助于理解社会和非社会相互作用的新兴特性.
- 关系感知涉及到视觉系统内的独特但也概括的神经网络.
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