纹理一致性调节感知偏差,但在手幻觉期间对视觉触觉刺激的敏感性并非如此
Renzo C Lanfranco1, Marie Chancel2,3, H Henrik Ehrsson4
1Department of Neuroscience, Karolinska Institutet, Solnavägen 9, 171 65, Stockholm, Sweden. Renzo.Lanfranco@ki.se.
Cognitive, affective & behavioral neuroscience
|January 23, 2024
概括
纹理不一致会影响手幻觉 (RHI) 的感知偏差,而不是灵敏度. 这种偏见在较短的视觉触觉延迟时最强烈,影响身体所有权的理解.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 肉体感官研究研究
背景情况:
- 身体所有权是对自己的身体拥有自主的感觉.
- 手幻觉 (RHI) 是研究身体所有权的关键工具,依赖于多感官集成.
- 纹理不一致对RHI机制的影响尚不清楚.
研究的目的:
- 调查真实手和手之间的纹理不一致如何影响RHI.
- 在RHI框架内区分纹理对感知灵敏度和感知偏差的影响.
主要方法:
- 开发了一个新的心理物理RHI范式.
- 使用心理测量功能拟合来分析RHI.
- 应用信号检测理论来区分灵敏度和偏差.
主要成果:
- 纹理一致性在RHI中转移了主观平等的点.
- 纹理不一致影响了感知偏差,但不是对视觉触觉刺激的敏感性.
- 纹理一致性偏差效应在较短的视觉触觉异步 (50-100 ms) 时比在较长的 (200 ms) 时更明显.
结论:
- 纹理不一致性主要影响RHI的感知偏差,而不是视觉触觉敏感性.
- 纹理对感知偏差的影响在幻觉的灵敏度最低时最明显.
- 研究结果揭示了身体所有权和多感官集成的自上而下和自下而上相互作用.
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