Greven Inez M, Ramsey Richard
Wales Institute for Cognitive Neuroscience, School of Psychology, Bangor University, Bangor, Gwynedd, Wales LL57 2AS, UK.
Wales Institute for Cognitive Neuroscience, School of Psychology, Bangor University, Bangor, Gwynedd, Wales LL57 2AS, UK.
Neuropsychologia. 2017 Feb;96:52-60. doi: 10.1016/j.neuropsychologia.2017.01.003. Epub 2017 Jan 6.
The majority of human neuroscience research has focussed on understanding functional organisation within segregated patches of cortex. The ventral visual stream has been associated with the detection of physical features such as faces and body parts, whereas the theory-of-mind network has been associated with making inferences about mental states and underlying character, such as whether someone is friendly, selfish, or generous. To date, however, it is largely unknown how such distinct processing components integrate neural signals. Using functional magnetic resonance imaging and connectivity analyses, we investigated the contribution of functional integration to social perception. During scanning, participants observed bodies that had previously been associated with trait-based or neutral information. Additionally, we independently localised the body perception and theory-of-mind networks. We demonstrate that when observing someone who cues the recall of stored social knowledge compared to non-social knowledge, a node in the ventral visual stream (extrastriate body area) shows greater coupling with part of the theory-of-mind network (temporal pole). These results show that functional connections provide an interface between perceptual and inferential processing components, thus providing neurobiological evidence that supports the view that understanding the visual environment involves interplay between conceptual knowledge and perceptual processing.
大多数人类神经科学研究都集中在理解大脑皮层不同区域内的功能组织。腹侧视觉通路与诸如面部和身体部位等物理特征的检测相关,而心理理论网络则与对心理状态和潜在性格的推断相关,比如某人是否友好、自私或慷慨。然而,迄今为止,这些不同的处理组件如何整合神经信号在很大程度上仍是未知的。我们使用功能磁共振成像和连接性分析,研究了功能整合对社会认知的贡献。在扫描过程中,参与者观察那些之前与基于特质或中性信息相关联的身体。此外,我们独立定位了身体感知和心理理论网络。我们证明,当观察一个能唤起对存储的社会知识而非非社会知识回忆的人时,腹侧视觉通路中的一个节点(纹外体区)与心理理论网络的一部分(颞极)表现出更强的耦合。这些结果表明,功能连接在感知和推理处理组件之间提供了一个接口,从而提供了神经生物学证据,支持了这样一种观点,即理解视觉环境涉及概念知识和感知处理之间的相互作用。