A novel manipulation method of human body ownership using an fMRI-compatible master-slave system
A novel manipulation method of human body ownership using an fMRI-compatible master-slave system
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DOI：
10.1016/j.jneumeth.2014.05.038
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发表时间：
2014-09-30
影响因子：
3
通讯作者：
Higuchi, Toshiro
中科院分区：
文献类型：
--
作者：
Hara, Masayuki;Salomon, Roy;Higuchi, Toshiro
身体自我意识已成为认知神经科学的一个重要课题，旨在了解大脑如何在身体中创造一个统一的自我感觉。具体而言，全身错觉（FBI），其中身体自我意识的变化是通过使用视觉触觉刺激实验性地引入，导致提高对这些机制的理解。本文介绍了一种新的方法，经典的FBI范式使用机器人主从系统，使我们能够检查行为和MRI实验中的身体所有权的感觉和行动之间的相互作用。在所提出的方法中，使用的机器人主从系统，使独特的刺激，实验参与者可以管理自己的背部使用主动自我触摸触觉提示。这种主动的自我接触从未在FBI的实验中使用过，它允许测试FBI范式中感觉运动整合和代理（对我们行为的控制感）的作用。本研究的目的是提出一个机器人触觉平台，允许一个新的联邦调查局的范例，包括在MRI环境中的主动自我触摸。本文首先介绍了原型设备在fMRI环境中（用于3T和7T MRI扫描仪）的设计概念和性能。此外，将该原型装置应用于经典的FBI实验，验证了利用该原型装置成功地诱导出FBI。这些结果表明，所提出的方法有可能通过允许新的操纵和范例来推动我们对人体所有权和代理的理解。(C)2014爱思唯尔有限公司版权所有。
Bodily self-consciousness has become an important topic in cognitive neuroscience aiming to understand how the brain creates a unified sensation of the self in a body. Specifically, full body illusion (FBI) in which changes in bodily self-consciousness are experimentally introduced by using visual-tactile stimulation has led to improve understanding of these mechanisms. This paper introduces a novel approach to the classic FBI paradigm using a robotic master-slave system which allows us to examine interactions between action and the sense of body ownership in behavioral and MRI experiments. In the proposed approach, the use of the robotic master-slave system enables unique stimulation in which experimental participants can administer tactile cues on their own back using active self-touch. This active self-touch has never been employed in FBI experiments and it allows to test the role of sensorimotor integration and agency (the feeling of control over our actions) in FBI paradigms. The objective of this study is to propose a robotic-haptic platform allowing a new FBI paradigm including the active self-touch in MRI environments. This paper, first, describes the design concept and the performance of the prototype device in the fMRI environment (for 3T and 7T MRI scanners). In addition, the prototype device is applied to a classic FBI experiment, and we verify that the use of the prototype device succeeded in inducing the FBI. These results indicate that the proposed approach has a potential to drive advances in our understanding of human body ownership and agency by allowing novel manipulation and paradigms. (C) 2014 Elsevier B.V. All rights reserved.