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Reciprocal interactions among parietal and occipito-temporal representations support everyday object-directed actions
Neuropsychologia ( IF 2.6 ) Pub Date : 2024-02-29 , DOI: 10.1016/j.neuropsychologia.2024.108841
Bradford Z. Mahon , Jorge Almeida

Everyday interactions with common manipulable objects require the integration of conceptual knowledge about objects and actions with real-time sensory information about the position, orientation and volumetric structure of the grasp target. The ability to successfully interact with everyday objects involves analysis of visual form and shape, surface texture, material properties, conceptual attributes such as identity, function and typical context, and visuomotor processing supporting hand transport, grasp form, and object manipulation. Functionally separable brain regions across the dorsal and ventral visual pathways support the processing of these different object properties and, in cohort, are necessary for functional object use. Object-directed grasps display end-state-comfort: they anticipate in form and force the shape and material properties of the grasp target, and how the object will be manipulated after it is grasped. End-state-comfort is the default for everyday interactions with manipulable objects and implies integration of information across the ventral and dorsal visual pathways. We propose a model of how visuomotor and action representations in parietal cortex interact with object representations in ventral and lateral occipito-temporal cortex. One pathway, from the supramarginal gyrus to the middle and inferior temporal gyrus, supports the integration of action-related information, including hand and limb position (supramarginal gyrus) with conceptual attributes and an appreciation of the action goal (middle temporal gyrus). A second pathway, from posterior IPS to the fusiform gyrus and collateral sulcus supports the integration of grasp parameters (IPS) with the surface texture and material properties (e.g., weight distribution) of the grasp target. Reciprocal interactions among these regions are part of a broader network of regions that support everyday functional object interactions.

中文翻译:

顶叶和枕颞表征之间的相互作用支持日常的面向对象的行动

与常见可操纵物体的日常交互需要将有关物体和动作的概念知识与有关抓取目标的位置、方向和体积结构的实时感官信息相结合。与日常物体成功交互的能力涉及对视觉形式和形状、表面纹理、材料特性、身份、功能和典型背景等概念属性的分析,以及支持手部运输、抓握形式和物体操纵的视觉运动处理。背侧和腹侧视觉通路上功能上可分离的大脑区域支持处理这些不同的物体属性,并且在队列中,对于功能性物体的使用是必要的。面向对象的抓取显示了最终状态的舒适性:它们以形式预测并强制抓取目标的形状和材料属性,以及物体在被抓取后将如何被操纵。最终状态舒适度是与可操作物体的日常交互的默认值,并且意味着跨腹侧和背侧视觉通路的信息整合。我们提出了一个模型,描述顶叶皮层中的视觉运动和动作表征如何与腹侧和外侧枕颞皮层中的物体表征相互作用。从边缘上回到颞中回和颞下回的一条通路支持动作相关信息的整合,包括手和肢体位置(边缘上回)与概念属性和对动作目标(颞中回)的理解。第二条路径,从后 IPS 到梭状回和侧副沟,支持抓取参数 (IPS) 与抓取目标的表面纹理和材料特性(例如重量分布)的整合。这些区域之间的相互交互是支持日常功能对象交互的更广泛区域网络的一部分。
更新日期:2024-02-29
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