一种从清醒小鼠视网膜记录单个神经元的方法
Guosong Hong1, Tian-Ming Fu1, Mu Qiao2
1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
概括
研究人员开发了一种非手术方法,用于对小鼠视网膜质细胞 (RGC) 的稳定,长期记录. 这一突破使得能够详细研究清醒动物的神经电路和视觉处理.
科学领域:
- 神经科学
- 眼科 眼科
- 生物医学工程
背景情况:
- 视网膜是神经电路研究的一个关键模型.
- 视网膜的长期体内电生理学一直具有挑战性.
- 之前的方法在稳定性和侵入性上是有限的.
研究的目的:
- 开发一种非手术方法来稳定视网膜质细胞 (RGC) 的慢性电生理学.
- 为了长期监测清醒的动物的RGC活动.
- 研究视网膜中的神经电路功能和昼夜节律.
主要方法:
- 开发了一种新的非同轴内注射技术.
- 网状电子设备的设计是为了展开和合规地覆盖视网膜.
- 在清醒的小鼠中进行了16通道的电生理记录.
主要成果:
- 该方法在单个RGC中获得了长期稳定的体内记录,持续超过2周.
- 在视觉刺激的过程中,
- 在多个昼夜周期中观察到RGC反应的循环节律.
结论:
- 网状电子的非手术内注射为慢性视网膜记录提供了一个稳定的平台.
- 这种技术克服了以前研究视网膜神经电路的局限性.
- 它为了解视觉处理和视网膜中的昼夜调节开辟了新的途径.
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