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Representing strangers in personal space triggers coding of defensive hand movement
Neuropsychologia ( IF 2.6 ) Pub Date : 2021-06-02 , DOI: 10.1016/j.neuropsychologia.2021.107909
Haoyue Qian 1 , Xiangping Gao 2
Affiliation  

Our brain codes manipulable tools as possibilities for action, particularly for those surrounding the body. Recent studies showed people would adjust their motor program when observing others around their own bodies (i.e. in the personal space). However, it remained unclear whether representing a personal space invader can automatically trigger motor coding.

To address this, we devised an interaction task to measure the activation of pushing movements in facing a stranger approaching into personal space. The LRP (lateralized readiness potential) analyses revealed that observing a stranger in personal space caused an initial LRP bias associated with pushing movements, and an LRP deflection before responding of pull, suggesting representing personal space invaders activated the motor coding of push. The behavioral results showed the personal space intrusion prolonged the reaction time of participants’ subsequent instructed pulling responses. The results of experiment 2 confirmed the behavioral observation of experiment 1 and further revealed the relationship between the response bias of push and social anxiety. Together, the present study demonstrates representing a stranger in personal space activated coding of defensive hand movements and biased subsequent motor responses.



中文翻译:

在个人空间中代表陌生人会触发防御性手部动作的编码

我们的大脑将可操作的工具编码为行动的可能性,特别是对于身体周围的人。最近的研究表明,人们在观察自己身体周围的其他人时(即在个人空间中)会调整他们的运动程序。然而,目前尚不清楚代表个人空间入侵者是否可以自动触发运动编码。

为了解决这个问题,我们设计了一个交互任务来测量在面对接近个人空间的陌生人时推动动作的激活。LRP(侧向准备潜力)分析显示,观察个人空间中的陌生人会导致与推动运动相关的初始 LRP 偏差,以及在拉动响应之前的 LRP 偏转,这表明代表个人空间入侵者激活了推动的运动编码。行为结果表明,个人空间入侵延长了参与者随后指示的拉动反应的反应时间。实验2的结果证实了实验1的行为观察,进一步揭示了推的反应偏向与社交焦虑的关系。一起,

更新日期:2021-06-09
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