相关实验视频

Updated: Jun 29, 2026

Voltage-sensitive Dye Recording from Axons, Dendrites and Dendritic Spines of Individual Neurons in Brain Slices

Voltage-sensitive Dye Recording from Axons, Dendrites and Dendritic Spines of Individual Neurons in Brain Slices

Published on: November 29, 2012

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.

bioRxiv : the preprint server for biology

|August 13, 2025

概括

研究人员开发了一种小型化显微镜,用于在自由移动的动物中进行电压成像. 这种新系统以高精度捕捉神经活动,使人们能够更深入地了解行为期间的大脑功能.

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:

使用遗传编码电压指示器 (GEVIs) 在自由移动的动物中进行功能成像,为神经科学提供了先进的能力.
研究神经活动的行为相关性需要高度的空间和时间精度.
缩小成像系统以有效检测电压峰值一直是一个重大挑战.

研究的目的:

开发一种小型化显微镜系统,用于体内电压成像.
为了克服电压峰值引起的微小光变化的解决挑战.
为了使自由移动的受试者能够高速记录神经活动.

主要方法:

设计了一种小型化显微镜,其数值孔径为0.6,视野为250微米,工作距离为1.3毫米.
显微镜系统的重量为16.4g,使其在自由移动的动物中更容易使用.
利用基因编码电压指示器 (GEVIs) 进行基于光的神经活动检测.

主要成果:

从Voltron2指示器成功成像了体内电压峰值.
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性能电压成像.
这项技术推动了神经活动及其与行为的关系的研究.
该系统的规格允许精确和快速捕获神经信号.

更多相关视频

Wide-field Single-photon Optical Recording in Brain Slices Using Voltage-sensitive Dye

Wide-field Single-photon Optical Recording in Brain Slices Using Voltage-sensitive Dye

Published on: June 20, 2019

In Vivo Wide-Field and Two-Photon Calcium Imaging from a Mouse Using a Large Cranial Window

In Vivo Wide-Field and Two-Photon Calcium Imaging from a Mouse Using a Large Cranial Window

Published on: August 4, 2022

相关概念视频

Overview of Microscopy Techniques

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...

Three-Dimensional Microscopy in Microbiology

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...