The grounding of abstract concepts in the motor and visual system: An fMRI study
The grounding of abstract concepts in the motor and visual system: An fMRI study
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DOI：
10.1016/j.cortex.2019.10.014
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发表时间：
2020-03-01
期刊：
影响因子：
3.6
通讯作者：
Kiefer, Markus
中科院分区：
文献类型：
--
作者：
Harpaintner, Marcel;Sim, Eun-Jin;Kiefer, Markus
概念在感觉运动脑系统中的基础是有争议的。接地认知模型提出，概念表示在特定的感觉运动模态，但也情绪和内省的大脑区域取决于特定的经验，在概念获取。越来越多的证据表明，具体的概念是密切相关的特定模态系统，而抽象概念的存在似乎与接地认知方法相矛盾。在这里，使用功能性磁共振成像，我们采用了一种理论驱动的方法，经常用于调查具体的概念领域的抽象概念：我们比较了大脑激活抽象概念与已知的电机与视觉特征的内容，确定了以前的属性列表研究。精心匹配的电机（例如，健身）和视觉（例如，美）的抽象词与伪词沿着呈现给24名参与者，同时执行词汇决策任务。此外，参与者通过实际移动他们的手（运动定位器）和通过观看真实的图片（视觉定位器）来执行两个定位器任务。运动抽象词的处理，特别是激活额叶和顶叶运动区，而视觉抽象词的处理，特别引起颞枕叶视觉区的活动更高，虽然在一个更宽松的统计阈值。根据包容性掩蔽分析，运动和视觉抽象概念的这种差异活动模式与手部运动（中央前回和中央后回）和物体感知（梭状回和舌回）过程中观察到的大脑激活重叠。因此，与扎根认知框架相一致，我们的研究结果表明，与具体概念类似，与行动和视觉相关的抽象概念扎根于特定于模态的大脑系统，这些系统通常根据其概念特征内容参与实际感知和行动。(C)2019作者（S）爱思唯尔有限公司出版
The grounding of concepts in the sensorimotor brain systems is controversially discussed. Grounded cognition models propose that concepts are represented in modality-specific sensorimotor, but also emotional and introspective brain areas depending on specific experiences during concept acquisition. Accumulating evidence suggests that concrete concepts are closely linked to modality-specific systems, whereas the mere existence of abstract concepts seems to contradict grounded cognition approaches. Here, using functional magnetic resonance imaging, we adopted a theory-driven approach frequently used for investigating concrete concepts to the domain of abstract concepts: We compared brain activation to abstract concepts with a known motor versus visual feature content as determined by a previous property listing study. Carefully matched motor (e.g., fitness) and visual (e.g., beauty) abstract words were presented to 24 participants along with pseudo-words while performing a lexical decision task. Furthermore, participants performed two localizer tasks by actually moving their hands (motor localizer) and by looking at real pictures (visual localizer). Processing of motor abstract words specifically activated frontal and parietal motor areas, whereas processing of visual abstract words specifically elicited higher activity in temporo-occipital visual areas, albeit at a more lenient statistical threshold. According to inclusive masking analyses, this differential activity pattern to motor and visual abstract concepts overlapped with brain activations observed during hand movements (pre- and postcentral gyrus) and object perception (fusiform and lingual gyrus). Thus, consistent with the grounded cognition framework, our results suggest that, similar to concrete concepts, abstract concepts related to action and vision are grounded in modality-specific brain systems typically engaged in actual perception and action depending on their conceptual feature content. (C) 2019 The Author(s). Published by Elsevier Ltd.