Klepp Anne, Niccolai Valentina, Sieksmeyer Jan, Arnzen Stephanie, Indefrey Peter, Schnitzler Alfons, Biermann-Ruben Katja
Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University, Universitätsstr. 1, 40225 Düsseldorf, Germany.
Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University, Universitätsstr. 1, 40225 Düsseldorf, Germany.
Behav Brain Res. 2017 Jun 15;328:149-158. doi: 10.1016/j.bbr.2017.04.002. Epub 2017 Apr 4.
The interaction of action-related language processing with actual movement is an indicator of the functional role of motor cortical involvement in language understanding. This paper describes two experiments using single action verb stimuli. Motor responses were performed with the hand or the foot. To test the double dissociation of language-motor facilitation effects within subjects, Experiments 1 and 2 used a priming procedure where both hand and foot reactions had to be performed in response to different geometrical shapes, which were preceded by action verbs. In Experiment 1, the semantics of the verbs could be ignored whereas Experiment 2 included semantic decisions. Only Experiment 2 revealed a clear double dissociation in reaction times: reactions were facilitated when preceded by verbs describing actions with the matching effector. In Experiment 1, by contrast, there was an interaction between verb-response congruence and a semantic variable related to motor features of the verbs. Thus, the double dissociation paradigm of semantic motor priming was effective, corroborating the role of the motor system in action-related language processing. Importantly, this effect was body part specific.
与动作相关的语言加工与实际动作之间的相互作用，是运动皮层参与语言理解功能作用的一个指标。本文描述了两个使用单个动作动词刺激的实验。运动反应通过手或脚来执行。为了测试受试者内语言 - 运动促进效应的双重分离，实验1和实验2采用了启动程序，其中手和脚的反应都必须针对不同的几何形状做出，这些几何形状之前会出现动作动词。在实验1中，动词的语义可以被忽略，而实验2包括语义判断。只有实验2在反应时间上显示出明显的双重分离：当由描述使用匹配效应器动作的动词引导时，反应会得到促进。相比之下，在实验1中，动词 - 反应一致性与一个与动词运动特征相关的语义变量之间存在相互作用。因此，语义运动启动的双重分离范式是有效的，证实了运动系统在与动作相关的语言加工中的作用。重要的是，这种效应是特定于身体部位的。
