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微型广场显微镜用于高速度的体内电压成像

Catherine A Saladrigas¹, Forest Speed², Alec Teel³

¹Department of Electrical, Energy and Computer Engineering, University of Colorado Boulder, CO 80309, USA.

Biomedical optics express

|January 14, 2026

概括

神经科学家现在可以使用新的微型显微镜来研究自由运动的动物的大脑活动,用于电压成像. 该系统以高精度捕捉神经电压峰值,推进神经科学研究.

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:

在自由移动的动物中,功能成像对于理解神经活动的行为相关性至关重要.
遗传编码电压指示器 (GEVIs) 提供高空间和时间精度,但需要先进的成像系统.
缩小高效,高速成像系统用于电压成像一直是一个重大挑战.

研究的目的:

开发一种小型化显微镜,用于高性能的体内电压成像.
为了克服当前系统中收集效率不足和率缓慢的挑战.
为了能够精确地研究与行为相关的神经活动.

主要方法:

设计了一种小型化显微镜,其数值孔径为0.6和250微米的视野.
实现了1.3-1.6毫米的工作距离和16.4g的总重量.
利用基因编码的电压指示器 (GEVIs) 进行基于光的电压传感.

主要成果:

成功成像了来自Voltron2.2的活体电压峰值.
达到高峰峰与噪声比率大于3.
在530Hz的高率下运行系统.

结论:

开发的小型化显微镜能够在自由移动的动物中进行高保真电压成像.
这项技术克服了以前在成像系统小型化和速度方面的局限性.
它为以前所未有的精度将神经动力学与行为相关联开辟了新的途径.

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