The neural career of sensory-motor metaphors.
The neural career of sensory-motor metaphors.
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DOI：
10.1162/jocn.2010.21596
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发表时间：
2011-09
影响因子：
3.2
通讯作者：
Seidenberg MS
中科院分区：
文献类型：
--
作者：
Desai RH;Binder JR;Conant LL;Mano QR;Seidenberg MS
感觉-运动系统在概念理解中的作用一直存在争议。许多抽象概念是通过具体的感觉-运动域（如动作）隐喻性地理解的。使用功能磁共振成像，我们比较了对不同熟悉程度的文字动作（Lit；女儿抓住了花）、隐喻动作（Met；公众抓住了这个想法）和抽象句子（Abs；公众理解了这个想法）的神经反应。Lit和Met句子都激活了左前下部分小叶（aIPL），这是一个与行动计划有关的区域，而Met句子也激活了右半球中相对于Abs句子的相应区域。Met和Abs句子都激活了与抽象语言相关的左颞上区。重要的是，初级运动和生物运动感知区域的激活与Lit和Met熟悉度呈负相关。这些结果支持了这样一种观点，即对隐喻行为的理解与涉及动作表现的感觉-运动系统保持着联系。然而，感觉-运动系统在隐喻理解中的参与通过一个渐进的抽象过程发生变化，在这个过程中，相对详细的模拟被用于理解不熟悉的隐喻，随着熟悉程度的增加，这些模拟变得不那么详细，只涉及次级运动区域。与这些数据一致，我们提出aIPL作为感觉-运动系统和概念系统之间的接口，并在这两个领域发挥重要作用。抽象句和隐喻句在左颞上区的相似性表明，动作隐喻的理解并不完全基于感觉-运动模拟，而是依赖于抽象的词汇-语义编码。
The role of sensory-motor systems in conceptual understanding has been controversial. It has been proposed than many abstract concepts are understood metaphorically through concrete sensory-motor domains such as actions. Using fMRI, we compared neural responses to literal action (Lit; The daughter grasped the flowers), metaphoric action (Met; The public grasped the idea), and abstract (Abs; The public understood the idea) sentences of varying familiarity. Both Lit and Met sentences activated the left anterior inferior partial lobule (aIPL), an area involved in action planning, with Met sentences also activating a homologous area in the right hemisphere, relative to Abs sentences. Both Met and Abs sentences activated left superior temporal regions associated with abstract language. Importantly, activation in primary motor and biological motion perception regions was inversely correlated with Lit and Met familiarity. These results support the view that the understanding of metaphoric action retains a link to sensory-motor systems involved in action performance. However, the involvement of sensory-motor systems in metaphor understanding changes through a gradual abstraction process whereby relatively detailed simulations are used for understanding unfamiliar metaphors, and these simulations become less detailed and involve only secondary motor regions as familiarity increases. Consistent with these data, we propose that aIPL serves as an interface between sensory-motor and conceptual systems and plays an important role in both domains. The similarity of abstract and metaphoric sentences in the activation of left superior temporal regions suggests that action metaphor understanding is not completely based on sensory-motor simulations, but relies also on abstract lexical-semantic codes.
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