在人类的反应抑制过程中,多个岛屿前额路径是感知到执行的基础
Takahiro Osada1, Koji Nakajima2,3, Tomohiko Shirokoshi2,3
1Department of Neurophysiology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan. tosada@juntendo.ac.jp.
了解反应抑制需要绘制大脑电路的地图. 这项研究揭示了一条连续的途径,涉及视觉皮层,胰岛和额叶皮层,这对于停止行动至关重要.
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:
- 响应抑制对于目标导向行为至关重要.
- 抑制前性反应的精确神经回路仍然不完全理解.
- 研究这些电路需要全脑方法,结合多种方法.
研究的目的:
- 阐明人类反应抑制背后的宏观大脑电路.
- 为了研究在停止开始行动的过程中大脑区域之间的相互作用.
- 确定参与抑制反应的关键大脑区域之间的因果关系.
主要方法:
- 使用功能磁共振成像 (fMRI) 进行全脑分析.
- 采用跨膜超声波刺激和时间解析磁刺激进行因果推断.
- 结合神经成像和大脑刺激技术,绘制神经通路的地图.
主要成果:
- 确定了一条连续的四步处理路径:初级视觉皮层 (V1) → 背部前胰岛 (daINS) → 腹部后部下部前皮层 (vpIFC) /前部下部前皮层 (aIFC) → 基底 (BG) /初级运动皮层 (M1).
- 证明了daINS对VPIFC的因果影响.
- 揭示了aIFC对vpIFC的单向依赖,突出了不对称的岛屿前额线路.
结论:
- 这项研究概述了一种用于抑制反应的宏观大脑电路:V1→daINS→vpIFC/aIFC→BG/M1.
- 在响应抑制期间,在岛屿前额叶皮层内存在不对称的信息流.
- 这些发现提升了我们对抑制控制神经基础的理解.
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