HD-tDCS over motor cortex facilitates figurative and literal action sentence processing.
HD-tDCS over motor cortex facilitates figurative and literal action sentence processing.
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DOI：
10.1016/j.neuropsychologia.2021.107955
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发表时间：
2021-08-20
期刊：
影响因子：
2.6
通讯作者：
Desai RH
中科院分区：
文献类型：
--
作者：
Johari K;Riccardi N;Malyutina S;Modi M;Desai RH
大脑的动作和感知系统在多大程度上参与语义理解仍然存在争议。比喻性语言，如隐喻和习语，是否以感觉运动系统为基础，尤其有争议。在这里，我们使用高清晰度经颅直流电刺激（HD-tDCS）在健康成年人的左半球运动皮层的作用，在理解的动作句子，相对于理解的句子与视觉动词。动作句分为三种类型：字面的，隐喻的，或成语。这使我们能够问，在比喻语境中使用的动作动词的处理是否依赖于运动皮层。结果表明，相对于视觉句子控制，动作句子理解反应时被促进。相对于视觉句子显着的相互作用，观察到文字，隐喻，和惯用的动作句与HD-tDCS的运动皮层。这些结果表明，左侧运动皮层功能参与动作句的理解。此外，当句子的动作内容是比喻性的时，这种参与就存在。这些结果为大脑的概念系统和动作系统之间的功能联系提供了证据。
The extent to which action and perception systems of the brain are involved in semantic comprehension remains controversial. Whether figurative language, such as metaphors and idioms, is grounded in sensory-motor systems is especially contentious. Here, we used high-definition transcranial direct current stimulation (HD-tDCS) in healthy adults to examine the role of the left-hemisphere motor cortex during the comprehension of action sentences, relative to comprehension of sentences with visual verbs. Action sentences were divided into three types: literal, metaphoric, or idiomatic. This allowed us to ask whether processing of action verbs used in figurative contexts relies on motor cortex. The results revealed that action sentence comprehension response times were facilitated relative to the visual sentence control. Significant interaction relative to visual sentences was observed for literal, metaphoric, and idiomatic action sentences with HD-tDCS of the motor cortex. These results suggest that the left motor cortex is functionally involved in action sentence comprehension. Furthermore, this involvement exists when the action content of the sentences is figurative. The results provide evidence for functional links between conceptual and action systems of the brain.
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影响因子：
2.6
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