Univ. Lille, CNRS, CHU Lille, UMR 9193 - SCALab - Sciences Cognitives et Sciences Affective, F-59000, Lille, France.
Institut Universitaire de France, Paris, France.
Sci Rep. 2019 Sep 6;9(1):12862. doi: 10.1038/s41598-019-49318-3.
We assessed the sympathetic and parasympathetic activation associated to the observation of Pantomime (i.e. the mime of the use of a tool) and Intransitive gestures (i.e. expressive) performed toward (e.g. a comb and "thinking") and away from the body (e.g. key and "come here") in a group of healthy participants while both pupil dilation (N = 31) and heart rate variability (N = 33; HF-HRV) were recorded. Large pupil dilation was observed in both Pantomime and Intransitive gestures toward the body; whereas an increase of the vagal suppression was observed in Intransitive gestures away from the body but not in those toward the body. Our results suggest that the space where people act when performing a gesture has an impact on the physiological responses of the observer in relation to the type of social communicative information that the gesture direction conveys, from a more intimate (toward the body) to a more interactive one (away from the body).
我们评估了健康参与者在观察模仿动作（即模仿使用工具）和非传递手势（即表达性手势）时的交感神经和副交感神经激活情况，这些手势分别朝向（例如梳子和“思考”）和远离（例如钥匙和“过来”）身体执行。在记录瞳孔扩张（N=31）和心率变异性（HF-HRV；N=33）的同时，还对参与者进行了观察。在模仿动作和朝向身体的非传递手势中，瞳孔明显扩大；而在远离身体的非传递手势中，观察到迷走神经抑制增加，但在朝向身体的手势中则没有观察到这种情况。我们的研究结果表明，人们在执行手势时所处的空间会影响观察者的生理反应，这与手势方向所传达的社会交际信息的类型有关，从更亲密的（朝向身体）到更互动的（远离身体）。
