Distinct roles of temporal and frontoparietal cortex in representing actions across vision and language
Distinct roles of temporal and frontoparietal cortex in representing actions across vision and language
复制标题
颞叶和额顶叶皮层在表示视觉和语言行为中的独特作用
DOI：
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发表时间：
2019
影响因子：
16.6
通讯作者：
A. Caramazza
中科院分区：
文献类型：
--
作者：
Moritz F. Wurm;A. Caramazza
颞叶和额顶叶脑区都与世界知识的表征有关，特别是关于行动的知识。然而，这些大脑区域代表什么以及它们之间的确切差异仍然未知。在这里，我们揭示了不同的功能配置文件的外侧颞叶和额顶叶皮层使用功能磁共振成像为基础的MVPA。额顶区以重叠的方式对观察到的动作和相应的书面句子的表征进行编码，但这些表征并不能概括整个刺激类型。相比之下，只有左侧后颞叶皮层（LPTC）编码动作表征，概括了观察到的动作场景和书面描述。LPTC中刺激-一般动作信息的表征组织可以从描述基本的代理-患者关系（对象和人导向）和动作之间的一般语义相似性的模型中预测。我们的研究结果表明，LPTC编码一般的，概念方面的行动，而额顶表征似乎是与特定的刺激类型。颞叶和额顶叶脑区都对动作的表征进行编码，但它们是否以不同的方式进行编码还不清楚。在这里，作者表明，只有外侧后颞叶皮层（LPTC）编码的表征，概括了直接观察到的动作场景和书面描述。
Both temporal and frontoparietal brain areas are associated with the representation of knowledge about the world, in particular about actions. However, what these brain regions represent and precisely how they differ remains unknown. Here, we reveal distinct functional profiles of lateral temporal and frontoparietal cortex using fMRI-based MVPA. Frontoparietal areas encode representations of observed actions and corresponding written sentences in an overlapping way, but these representations do not generalize across stimulus type. By contrast, only left lateral posterior temporal cortex (LPTC) encodes action representations that generalize across observed action scenes and written descriptions. The representational organization of stimulus-general action information in LPTC can be predicted from models that describe basic agent-patient relations (object- and person-directedness) and the general semantic similarity between actions. Our results suggest that LPTC encodes general, conceptual aspects of actions whereas frontoparietal representations appear to be tied to specific stimulus types. Temporal and frontoparietal brain areas both encode representations of actions, but whether they do so in different ways is unclear. Here, the authors show that only lateral posterior temporal cortex (LPTC) encodes representations that generalize across directly observed action scenes and written descriptions.
影响因子：
19.9
作者：
Mahon, Bradford Z.;Caramazza, Alfonso
通讯作者：
Caramazza, Alfonso
影响因子：
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作者：
Brainard, DH
通讯作者：
Brainard, DH
与单词相关的运动活动的起源。
DOI：
10.1093/cercor/bht423
发表时间：
2015
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
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作者：
Papeo,Liuba;Lingnau,Angelika;Agosta,Sara;Pascual-Leone,Alvaro;Battelli,Lorella;Caramazza,Alfonso
通讯作者：
Caramazza,Alfonso