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鼠标视觉皮层中人口活动的拓结构编码了密集采样的刺激旋转
Kosio Beshkov1, Marianne Fyhn1, Torkel Hafting1,2
1Center for Integrative Neuroplasticity, Department of Bioscience, University of Oslo, Oslo, Norway.
iScience
|March 25, 2024
概括
在主要视觉皮层中的神经群体活动形成了一个圆形的多元体,编码视觉旋转. 这种结构在神经元子群体中各不相同,揭示了对感官计算的洞察力.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 系统神经科学 系统神经科学
背景情况:
- 主视觉皮层 (V1) 对于视觉处理和感官计算至关重要.
- 高密度神经记录显示,神经群体活动通常存在于低维的多重体上.
研究的目的:
- 量化主要视觉皮层中神经多元体的几何结构.
- 研究神经群活动如何编码视觉刺激,特别是旋转角度.
主要方法:
- 分析公开可用的从老鼠V1.1.两光子光学记录的分析.
- 使用地理测量度量和持久的同质性来分析神经人口活动.
- 检查对视觉刺激的反应,采用密集采样的旋转角度.
主要成果:
- 在V1中神经群体的活动形成了一个圆形的多元体,以响应旋转的视觉刺激.
- 这种圆形变频器有效地编码视觉旋转的角度.
- 这种圆形多元体的表达在具有明显的定向和方向选择性的神经元子群之间有所不同.
结论:
- 在V1中神经群活动的结构表现出明显的拓,特别是一个圆形的多重体.
- 了解这种多重结构,可以了解大脑是如何表示感官信息的.
- 在准确重建神经群体动态的真实拓学方面存在挑战.
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