后围膜皮层的暂时抑制在路径集成过程中影响与行动相关但不与行动无关的视觉处理
Florian Bublatzky1, Martin Riemer2,3
1Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University.
Journal of cognitive neuroscience
|June 24, 2025
概括
后壁皮质 (PPC) 对于在活动运动期间的路径集成至关重要,但不是被动的光流感知. 这凸显了PPC在处理导航的自动运动线索中的作用.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 人类导航人类导航
背景情况:
- 路径整合对于导航至关重要,传统上与中间叶结构有关.
- 新出现的证据表明,后顶层皮质 (PPC) 参与了导航计算.
- 与主动与被动自动运动感知有关的PPC的作用仍然不清楚.
研究的目的:
- 调查人类路径集成是否依赖于PPC处理流.
- 要区分PPC在主动控制运动中的作用与被动光流感知.
主要方法:
- 使用跨磁刺激 (TMS) 抑制PPC.
- 对两个虚拟现实路径集成任务的性能进行比较:一个带有主动运动,一个带有被动光流.
- 分析行为表现,特别是距离判断.
主要成果:
- 抑制PPC在主动运动路径集成任务中选择性地损害了距离判断.
- 被动光流任务的性能不受PPC抑制的影响.
- 这表明PPC对于主动控制的运动至关重要,而不是被动光流.
结论:
- 后壁皮质 (PPC) 对于在路径集成过程中处理主动控制的自我运动至关重要.
- 对导航的光流的被动感知在很大程度上独立于PPC.
- PPC将自我定位信号集成到一个自我中心的框架中,补充了中间叶功能.
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