视力下降对虚幻身体所有权的神经认知影响
Gustavo S P Pamplona1, Amedeo Giussani2, Lena Salzmann3
1Sensory-Motor Laboratory (SeMoLa), Jules-Gonin Eye Hospital/Fondation Asile des Aveugles, Department of Ophthalmology/University of Lausanne, Lausanne, Switzerland; Rehabilitation Engineering Laboratory (RELab), Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland; Department of Child and Adolescent Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland.
NeuroImage
|September 30, 2024
概括
在虚拟手幻觉 (VHI) 期间降低虚拟手的可见性,削弱了对身体所有权的感觉,并降低了视觉,运动和体感官区域的大脑活动. 这凸显了视觉在体现中的重要性.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 心理学 心理学 心理学
背景情况:
- 手幻觉展示了视觉触觉刺激如何创造一种虚假的身体所有权感.
- 人造肢体的可见性是影响幻觉认知和神经基础的关键因素.
研究的目的:
- 为了研究操纵虚拟手的可见性如何影响大脑活动 (fMRI),主观化身评级和代理体感.
- 探索视觉输入降解对虚幻身体所有权和相关神经过程的影响.
主要方法:
- 45名神经类型参与者接受了修改的虚拟手幻觉 (VHI) 协议,虚拟手可见度不同 (高,中,低).
- 大脑活动 (fMRI),皮肤导电性和主观评分在VHI和随后的代理疼痛协议期间被记录下来.
- 分析的重点是视觉,体感和运动大脑区域的调制.
主要成果:
- 在VHI和代理疼痛期间,视觉操纵显著调节视觉,体感和运动区域的大脑活动.
- 虚拟手的可见性较低导致虚幻幻象的主观评分较低.
- 在VHI诱导期间视觉输入减少导致关键神经网络的活动减少.
结论:
- 视觉输入在虚幻身体所有权和体现的力量中发挥着关键作用.
- 在视觉触觉刺激期间修改视觉线索可以改变虚拟手幻觉的主观体验和神经相关性.
- 退化的视觉输入削弱了虚幻所有权的皮质和主观方面,强调了视觉在实施例中的统治地位.
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