感受到手的疼痛:在手的幻觉中感知偏移
Sara Coppi1, Karin B Jensen2, H Henrik Ehrsson1
1Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
iScience
|June 23, 2025
概括
感觉,疼痛的感觉,在对身体所有权的感觉中起着关键作用. 触觉和感觉手幻觉 (RHI) 都证明了这一点,显示了对假肢的疼痛感知转移.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 身体上的感觉 (somatosensation) 是一种感觉.
背景情况:
- 身体所有权是对自己的身体属于自己的感觉.
- 这种所有权依赖于整合来自多种感官的信息.
- 不同感官输入的相对重要性,如疼痛 (nociception),尚未完全理解.
研究的目的:
- 为了研究 nociception 在身体所有权的意义上的作用.
- 为了比较可感知手幻觉 (N-RHI) 与经典触觉RHI的强度.
- 为了确定这些幻觉是否会导致感知疼痛位置的变化 (nociceptive drift).
主要方法:
- 使用了感知性手幻觉 (N-RHI),使用有害的激光刺激.
- 在N-RHI,触觉RHI和对照条件之间比较了问卷答复和自身感知漂移.
- 评估了 nociceptive 漂移的发生,疼痛感知向手的转移.
主要成果:
- 与对照组相比,N-RHI和触觉RHI都产生了同样强烈的主观体验和自身感知转变.
- 在触觉RHI和N-RHI条件下观察到显著的感知漂移.
- 问卷答复表明,在触觉和感觉RHI中,幻觉强度相似.
结论:
- 意识对身体所有权的感觉有很大的贡献.
- 这些发现强调了疼痛感知在我们如何定位和体验感觉方面的关键作用.
- 身体所有权基本上是一种多感官现象,整合了触觉和疼痛.
相关概念视频
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