一个大视野,单细胞分辨率的两和三光子显微镜用于深度成像
Aaron T Mok1,2, Tianyu Wang1, Shitong Zhao1
1School of Applied Engineering Physics, Cornell University, NY, USA.
bioRxiv : the preprint server for biology
|November 28, 2023
概括
研究人员开发了新的三光子显微镜技术,以克服深部大脑成像的视野限制. 这允许在分散组织中进行前所未有的大规模,高速的神经元活动映射.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
- 光学成像技术的成像
背景情况:
- 神经网络的体内成像对于理解大脑功能至关重要.
- 多光子显微镜提高了速度,视野和深度,但在分散组织方面存在局限性.
- 在深层组织成像中,视野随着深度的增加而呈指数级下降,这是由于热损伤的担忧.
研究的目的:
- 为了克服三光子显微镜的视野限制,用于深度脑部成像.
- 为了使两光子显微镜无法进入深度的神经元活动的成像.
- 开发用于大视野和系统级神经电路研究的技术.
主要方法:
- 三光子显微镜的创新,以增强视野和成像深度.
- 实现同时进行两光子和三光子成像.
- 技术应用于小鼠大脑和成年斑马鱼.
主要成果:
- 在4Hz的~3.5mm视野中实现了神经元活动成像,具有单细胞分辨率.
- 在老鼠大脑中最深层的皮质层中启用了深度成像.
- 证明了皮层下和全脑成像能力.
结论:
- 开发的创新解决了深层组织多光子成像技术的局限性.
- 这些技术有助于大视野,系统级神经电路研究.
- 这些方法可以适应现有的多光子显微镜.
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