Nalborczyk Ladislas, Perrone-Bertolotti Marcela, Baeyens Céline, Grandchamp Romain, Polosan Mircea, Spinelli Elsa, Koster Ernst H W, Lœvenbruck Hélène
Univ. Grenoble Alpes, CNRS, LPNC UMR 5105, F-38000 Grenoble; Department of Experimental Clinical and Health Psychology, Ghent University, Belgium.
Univ. Grenoble Alpes, CNRS, LPNC UMR 5105, F-38000 Grenoble.
Biol Psychol. 2017 Jul;127:53-63. doi: 10.1016/j.biopsycho.2017.04.013. Epub 2017 Apr 30.
Rumination is predominantly experienced in the form of repetitive verbal thoughts. Verbal rumination is a particular case of inner speech. According to the Motor Simulation view, inner speech is a kind of motor action, recruiting the speech motor system. In this framework, we predicted an increase in speech muscle activity during rumination as compared to rest. We also predicted increased forehead activity, associated with anxiety during rumination. We measured electromyographic activity over the orbicularis oris superior and inferior, frontalis and flexor carpi radialis muscles. Results showed increased lip and forehead activity after rumination induction compared to an initial relaxed state, together with increased self-reported levels of rumination. Moreover, our data suggest that orofacial relaxation is more effective in reducing rumination than non-orofacial relaxation. Altogether, these results support the hypothesis that verbal rumination involves the speech motor system, and provide a promising psychophysiological index to assess the presence of verbal rumination.
反刍主要以重复性言语思维的形式出现。言语反刍是内心言语的一种特殊情况。根据运动模拟观点，内心言语是一种运动行为，会调用言语运动系统。在此框架下，我们预测与休息时相比，反刍过程中言语肌肉活动会增加。我们还预测反刍过程中前额活动会增加，这与焦虑有关。我们测量了口轮匝肌上下部、额肌和桡侧腕屈肌的肌电活动。结果显示，与初始放松状态相比，诱导反刍后嘴唇和前额活动增加，同时自我报告的反刍水平也有所提高。此外，我们的数据表明，口腔面部放松在减少反刍方面比非口腔面部放松更有效。总之，这些结果支持了言语反刍涉及言语运动系统这一假设，并为评估言语反刍的存在提供了一个有前景的心理生理指标。
