Serino Andrea, Pozeg Polona, Bernasconi Fosco, Solcà Marco, Hara Masayuki, Progin Pierre, Stripeikyte Giedre, Dhanis Herberto, Salomon Roy, Bleuler Hannes, Rognini Giulio, Blanke Olaf
Laboratory of Cognitive Neuroscience, Brain Mind Institute, Faculty of Life Sciences, Swiss Federal Institute of Technology (EPFL), Geneva, Switzerland.
Center for Neuroprosthetics, School of Life Sciences, Campus Biotech, Swiss Federal Institute of Technology, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1012 Geneva, Switzerland.
iScience. 2020 Dec 16;24(1):101955. doi: 10.1016/j.isci.2020.101955. eCollection 2021 Jan 22.
Thought insertion (TI) is characterized by the experience that certain thoughts, occurring in one's mind, are not one's own, but the thoughts of somebody else and suggestive of a psychotic disorder. We report a robotics-based method able to investigate the behavioral and subjective mechanisms of TI in healthy participants. We used a robotic device to alter body perception by providing online sensorimotor stimulation, while participants performed cognitive tasks implying source monitoring of mental states attributed to either oneself or another person. Across several experiments, conflicting sensorimotor stimulation reduced the distinction between self- and other-generated thoughts and was, moreover, associated with the experimentally generated feeling of being in the presence of an alien agent and subjective aspects of TI. Introducing a new robotics-based approach that enables the experimental study of the brain mechanisms of TI, these results link TI to predictable self-other shifts in source monitoring and specific sensorimotor processes.
思维插入（TI）的特征在于个体体验到某些出现在自己脑海中的想法并非自己的，而是他人的想法，这暗示着一种精神障碍。我们报告了一种基于机器人技术的方法，该方法能够研究健康参与者中思维插入的行为和主观机制。我们使用一个机器人设备通过提供在线感觉运动刺激来改变身体感知，同时参与者执行认知任务，这些任务涉及对归因于自己或他人的心理状态进行来源监测。在多个实验中，相互冲突的感觉运动刺激减少了自我产生和他人产生的想法之间的区别，此外，还与实验产生的被外星主体在场的感觉以及思维插入的主观方面相关联。这些结果引入了一种基于机器人技术的新方法，能够对思维插入的脑机制进行实验研究，将思维插入与来源监测中可预测的自我 - 他人转变以及特定的感觉运动过程联系起来。
