腹部流中可操纵物体的视觉处理是通过来自状动作系统的输入来调节的
bioRxiv : the preprint server for biology
|June 12, 2025
概括
左下垂体皮质通过影响腹部视觉通路中的神经活动来影响大脑如何处理可操纵对象. 白质路径,特别是弧形囊,对于这种与物体相关的视觉处理至关重要.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
背景情况:
- 功能性对象使用整合了从背部 (动作) 和腹部 (对象属性) 路径的视觉信息.
- 这些对象处理途径之间的精确相互作用和白质连接仍然不完全理解.
研究的目的:
- 研究神经通路和结构连接,支持可操纵对象的视觉处理.
- 为了确定背部视觉路径区域是否影响腹部视觉路径对物体的处理.
主要方法:
- 基于Voxel的损伤活动映射 (VLAM) 用于从109名左半球病变的神经外科患者的功能性MRI数据.
- 在一小部分参与者 (N=75) 中使用扩散MRI进行连接体全方位分析.
- 参与者在fMRI扫描期间查看可操纵物体,动物,面部和地方的图像.
主要成果:
- 在左下皮质 (前内皮质,上边) 的病变减少了神经对可操纵物体的反应在左状.
- 周围膜病变没有影响状回环中位置的处理.
- 左弧形囊中的白质完整性与状环中的对象特异性神经反应相关,这表明它在连接顶部和部区域方面的作用.
结论:
- 背部视觉通路,特别是左下皮质,直接调节腹部视觉通路对可操纵物体的反应.
- 通过左侧弧形囊的结构连接对于将动作表示与对象感知集成至关重要.
- 这项研究阐明了功能性物体使用的基础的神经机制,通过展示由白质道介导的背腔腹腔通路相互作用.
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