The common magnitude code underlying numerical and size processing for action but not for perception
The common magnitude code underlying numerical and size processing for action but not for perception
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DOI：
10.1007/s00221-009-1730-8
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发表时间：
2009-04-01
影响因子：
2
通讯作者：
Wu, Denise H.
中科院分区：
文献类型：
--
作者：
Chiou, Rocco Y. -C.;Chang, Erik C.;Wu, Denise H.
在数值认知的文献中，数字与动作相关过程之间的相互作用越来越受到关注。本研究通过两个双任务实验来探讨数字判断、理解判断和感知颜色/尺寸判断之间的相互作用。结果揭示了这些任务中涉及的幅度表征的共性和独特性。具体地说，在每次试验中，提供一张带有叠加阿拉伯数字的可抓取物体的照片。参与者被要求首先判断数字与手动反应的一致性，同时计划随后与所描述的物体有关的声音反应。当奇偶性和动作判断在时间上接近时，手指的数值大小与物体的适当动作（捏或抓）之间的兼容性效应在手动和声音反应中都得到了证明。相比之下，当宇称判断与颜色相关或感知大小判断相结合时，这种兼容性效应不存在。当前研究的结果支持了ATOM模型所提出的，在与动作相关的目的中，存在一种通用的数量级代码，其基础是数值和非数值维度（Walsh in Trends Cogn Sci:483-488, 2003）。此外，基于相容性效应的选择性存在，我们认为不同数量维度之间的相互作用符合人脑“背侧-行动-腹侧-感知”的组织原则。
The interaction between numbers and action-related process has received increasing attention in the literature of numerical cognition. In the current study, two dual-task experiments were conducted to explore the interaction among numerical, prehension, and perceptual color/size judgments. The results revealed the commonality and distinctness of the magnitude representations that are involved in these tasks. Specifically, a photograph of a graspable object with a superimposed Arabic digit was presented in each trial. Participants were required to first judge the parity of the digit with a manual response while simultaneously planning a subsequent vocal response pertaining to the depicted object. When parity and action judgments were performed close in time, the compatibility effect between the numerical magnitude of the digit and the appropriate action (pinch vs. clutch) for the object was demonstrated in both manual and vocal responses. In contrast, such compatibility effect was absent when parity judgment was coupled with color-related or perceptual size judgment. The findings of the current study support the existence of a common magnitude code underlying numerical and non-numerical dimensions for action-related purposes, as proposed by the ATOM model (Walsh in Trends Cogn Sci 7:483-488, 2003). Furthermore, based on the selective presence of the compatibility effect, we argue that the interaction among different quantity dimensions conforms to the "dorsal-action and ventral-perception" organizational principle of the human brain.