During social interactions, perception of emotions affects motor behaviour by triggering responses like freezing or approach and avoidance reactions. It is however difficult to get a clear picture of the relationship between emotion and posture as previous studies showed inconsistent results, due to methodological differences on stimuli and/or the postural measures used. In this study, we thoroughly investigate how the perception of emotions affects postural control and action tendencies, by contrasting two types of stimuli (emotional static faces or emotional videos) expressing different types of basic emotions (happy, fear, angry, sad, disgust and neutral). We also take into account some other contributing factors relying on stable individual traits (e.g., extraversion, neuroticism, conscientiousness, empathy, etc) and emotional state (e.g., anxiety). Our results show that dynamic stimuli have a greater impact than static stimuli on postural control. Moreover, a crucial aspect of our work lay in the modulation of the relationship between emotions and posture, by stable individual traits.

在社交互动中，情绪的感知会通过触发诸如冻结或进近和避免反应等反应来影响运动行为。然而，由于先前的研究显示出不一致的结果，由于对刺激的方法学差异和/或所使用的姿势测量方法的差异，很难清楚地了解情绪与姿势之间的关系。在这项研究中，我们通过对比两种表达不同类型基本情绪（快乐，恐惧，生气，悲伤，厌恶和厌恶）的刺激（情绪静态面孔或情绪视频），来彻底研究情绪的感知如何影响姿势控制和动作倾向。中性）。我们还考虑了一些其他因素，这些因素依赖于稳定的个人特征（例如外向，神经质，尽职，同情等）和情绪状态（例如 焦虑）。我们的结果表明，动态刺激比静态刺激对姿势控制的影响更大。此外，我们工作的一个关键方面在于通过稳定的个人特质来调节情绪与姿势之间的关系。