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首页> 美国卫生研究院文献>The Journal of Neuroscience >Body and Object Effectors: The Organization of Object Representations in High-Level Visual Cortex Reflects Body–Object Interactions
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Body and Object Effectors: The Organization of Object Representations in High-Level Visual Cortex Reflects Body–Object Interactions

机译：身体和物体效应器：高级视觉皮层中物体表示的组织反映了物体-物体之间的相互作用

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The principles driving the functional organization of object representations in high-level visual cortex are not yet fully understood. In four human fMRI experiments, we provide evidence that the organization of high-level visual cortex partly reflects the degree to which objects are typically controlled by the body to interact with the world, thereby extending the body's boundaries. Univariate whole-brain analysis showed an overlap between responses to body effectors (e.g., hands, feet, and limbs) and object effectors (e.g., hammers, combs, and tennis rackets) in lateral occipitotemporal cortex (LOTC) and parietal cortex. Region of interest analyses showed that a hand-selective region in left LOTC responded selectively to object effectors relative to a range of noneffector object control conditions (e.g., graspable objects, “act-on” objects, musical instruments). Object ratings showed that the strong response to object effectors in hand-selective LOTC was not due to general action-related object properties shared with these control conditions, such as hand priming, hand grasping, and hand-action centrality. Finally, whole-brain representational similarity analysis revealed that the similarity of multivoxel object response patterns in left lateral occipitotemporal cortex selectively predicted the degree to which objects were rated as being controlled by and extending the body. Together, these results reveal a clustering of body and object effector representations, indicating that the organization of object representations in high-level visual cortex partly reflects how objects relate to the body.
机译：尚未完全了解在高级视觉皮层中驱动对象表示的功能组织的原理。在四个人体功能磁共振成像实验中，我们提供了证据，表明高级视觉皮层的组织部分反映了物体通常受人体控制以与世界互动的程度，从而扩展了人体的边界。单变量全脑分析显示在枕叶外侧颞叶（LOTC）和顶叶皮质中，对身体效应器（例如手，脚和四肢）和物体效应器（例如锤子，梳子和网球拍）的响应之间存在重叠。感兴趣区域分析显示，相对于一系列非执行器对象控制条件（例如，可抓握的对象，“作用”对象，乐器），左侧LOTC中的手部选择性区域会选择性地响应对象执行器。对象评级表明，在手动选择LOTC中对对象效应器的强烈响应并不是由于与这些控制条件共享的一般与动作相关的对象属性，例如手启动，手抓握和手部动作集中。最后，全脑表征相似性分析表明，左侧枕颞皮层中多体素对象反应模式的相似性选择性地预测了对象被身体控制和伸展的程度。总之，这些结果揭示了身体和对象效应器表示的聚类，表明高级视觉皮层中对象表示的组织部分反映了对象与身体的关系。

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