Disentangling representations of shape and action components in the tool network
Disentangling representations of shape and action components in the tool network
复制标题
解开工具网络中形状和动作组件的表示
DOI：
10.1016/j.neuropsychologia.2018.05.026
复制
发表时间：
2018-08
期刊：
影响因子：
2.6
通讯作者：
Yanchao Bi
中科院分区：
文献类型：
--
作者：
Xiaoying Wang;Tonghe Zhuang;Jiasi Shen;Yanchao Bi
形状和如何使用它们是我们关于工具知识的两个关键组成部分。观察工具优先激活额顶和枕颞部网络，背侧区域参与工具相关动作的计算，腹侧区域参与形状表征。由于形状和操作方式与日常工具高度相关，它们是否在不同地区独立呈现仍不确定。在目前的研究中，我们收集了当参与者观看四种日常工具(即画笔、开瓶器、螺丝刀、剃须刀)的图片块时的fMRI数据，其中形状和动作(用于功能用途的操作方式)是正交操作的，以梳理这两个维度。还收集了利用物体形状和动作的细微方面(即运动方式、手臂动作幅度、手的形状)的行为相似性判断，以进一步理清物体形状和不同动作成分的表征。对工具偏好网络的区域神经激活模式进行了信息分析和代表性相似性分析。在这两项分析中，双侧枕颞叶外侧皮质显示出强健的形状表征，但不能有效区分工具使用动作。额区和中央前区域代表运动性动作成分，而左侧顶区(在信息分析中)显示形状和工具使用动作的编码。通过梳理形状和动作成分，我们发现它们在工具网络中既有解离又有关联。综上所述，我们的研究将物体形状的表征从工具网络中更精细的工具使用动作成分中分离出来，揭示了不同的工具偏好区域在工具加工中所起的潜在分离作用。
Shape and how they should be used are two key components of our knowledge about tools. Viewing tools preferentially activated a frontoparietal and occipitotemporal network, with dorsal regions implicated in computation of tool-related actions and ventral areas in shape representation. As shape and manners of manipulation are highly correlated for daily tools, whether they are independently represented in different regions remains inconclusive. In the current study, we collected fMRI data when participants viewed blocks of pictures of four daily tools (i.e., paintbrush, corkscrew, screwdriver, razor) where shape and action (manner of manipulation for functional use) were orthogonally manipulated, to tease apart these two dimensions. Behavioral similarity judgments tapping on object shape and finer aspects of actions (i.e., manners of motion, magnitude of arm movement, configuration of hand) were also collected to further disentangle the representation of object shape and different action components. Information analysis and representational similarity analysis were conducted on regional neural activation patterns of the tool-preferring network. In both analyses, the bilateral lateral occipitotemporal cortex showed robust shape representations but could not effectively distinguish between tool-use actions. The frontal and precentral regions represented kinematic action components, whereas the left parietal region (in information analyses) exhibited coding of both shape and tool-use action. By teasing apart shape and action components, we found both dissociation and association of them within the tool network. Taken together, our study disentangles representations for object shape from finer tool-use action components in the tool network, revealing the potential dissociable roles different tool-preferring regions play in tool processing.
登录
查看更多内容
影响因子：
9.8
作者：
Haushofer, Johannes;Livingstone, Margaret S.;Kanwisher, Nancy
通讯作者：
Kanwisher, Nancy
影响因子：
19.9
作者：
Epstein, Russell A.
通讯作者：
Epstein, Russell A.
DOI：
10.1093/cercor/bhw419
发表时间：
2017-01-01
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
--
作者：
Bracci S;Daniels N;Op de Beeck H
通讯作者：
Op de Beeck H
影响因子：
19.9
作者：
Mahon, Bradford Z.;Caramazza, Alfonso
通讯作者：
Caramazza, Alfonso
影响因子：
64.8
作者：
Epstein, R;Kanwisher, N
通讯作者：
Kanwisher, N