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Differential Tuning of Ventral and Dorsal Streams during the Generation of Common and Uncommon Tool Uses

机译:常见和不常见工具用途产生期间腹侧和背侧流的差异性调整

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摘要

Our use of tools is situated in different contexts. Prior evidence suggests that diverse regions within the ventral and dorsal streams represent information supporting common tool use. However, given the flexibility of object concepts, these regions may be tuned to different types of information when generating novel or uncommon uses of tools. To investigate this, we collected fMRI data from participants who reported common or uncommon tool uses in response to visually presented familiar objects. We performed a pattern dissimilarity analysis in which we correlated cortical patterns with behavioral measures of visual, action, and category information. The results showed that evoked cortical patterns within the dorsal tool use network reflected action and visual information to a greater extent in the uncommon use group, whereas evoked neural patterns within the ventral tool use network reflected categorical information more strongly in the common use group. These results reveal the flexibility of cortical representations of tool use and the situated nature of cortical representations more generally.
机译:我们在不同环境下使用工具。先前的证据表明,腹侧和背侧流中的不同区域代表支持常用工具使用的信息。但是,鉴于对象概念的灵活性,在生成新颖或不常见的工具用法时,可以将这些区域调整为不同类型的信息。为了对此进行研究,我们收集了参与者的fMRI数据,这些参与者报告了常见或不常见的工具使用情况,以回应视觉呈现的熟悉对象。我们进行了模式差异分析,在其中将皮质模式与视觉,动作和类别信息的行为度量相关联。结果表明,在不常见用途组中,背侧工具内诱发的皮质模式在更大程度上利用网络反映了动作和视觉信息,而在腹侧工具内的诱发神经模式在常规使用组中更强烈地反映了类别信息。这些结果揭示了工具使用的皮质表示的灵活性以及更一般地皮质表示的位置性质。

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