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心脏 afferent 信号可以促进双眼对抗中的视觉主导地位
John P Veillette1, Fan Gao1, Howard C Nusbaum1
1Department of Psychology, University of Chicago, Chicago, United States.
eLife
|October 2, 2024
概括
来自心脏的身体内部信号会影响视觉感知. 这项研究发现,心脏收缩 (心缩) 期间脉冲的视觉刺激持续时间更长,挑战了这样的信号均地抑制意识的想法.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 身体生理学 身体生理学
背景情况:
- 来自内脏器官 (如心脏) 的内接信号可以调节外接感知.
- 整感受和外感受之间的相互作用被认为是支持自我意识的理论.
- 以前关于心脏对视觉意识的影响的研究产生了不一致的结果.
研究的目的:
- 用双眼对抗范式研究心脏计时对视觉意识的影响.
- 测试巴罗受体假设关于心脏对感知影响的预测.
- 为了确定心跳感觉的有意识意识是否对于心脏调节的视觉竞争是必要的.
主要方法:
- 试验对象看到了对每只眼睛呈现的竞争性视觉刺激.
- 刺激被定时到心脏抽缩或腹缩期间的脉,与实时心电图 (ECG) 同步.
- 测量了双眼对抗的统治时间.
- 一个全感知意识任务评估了参与者区分心跳时间的能力.
主要成果:
- 抽缩期间脉冲的刺激与腹缩脉冲的刺激相比,表现出更长的感知主导持续时间.
- 这种效应甚至在参与者无法有意识地区分心缩与心缩时间刺激的人中也存在.
- 这些发现与巴罗受体假设对统一抑制效应的预测相矛盾.
结论:
- 心脏时间显著影响视觉意识,特别是通过延长与缩同步的刺激的主导地位.
- 这种心脏调节的视觉竞争是独立于有意识的心跳感知.
- 结果挑战了现有的理论,如巴罗受体假设,并提出了全感受-外感受相互作用的新机制.
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