在一个两光子全光学生理系统中,通过时间复杂激发来消除神经元活动中的交叉声信号
Chi Liu1, Yuejun Hao2,3,4, Bo Lei2,3,5
1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
Biomedical optics express
|April 18, 2024
概括
这项研究引入了时间复合激发,以消除双光子全光学生理系统中的交叉通话. 这种方法将成像和光刺激信号分开,使得用电压指示器更清晰地记录神经元活动.
科学领域:
- 神经科学是一个神经科学.
- 生物物理学的生物物理.
- 在光学成像系统中,光学成像
背景情况:
- 双光子全光学生理系统使得体内神经元电路能够以单个神经元分辨率破译.
- 图像和光刺激光束之间的交叉对这些系统构成重大挑战,特别是电压指示器.
研究的目的:
- 提出和验证一种时间复合激发方法,以消除双光子全光学生理学中的交叉通话.
- 评估这种方法对基因编码的和电压指标的影响.
主要方法:
- 同步激光脉冲用于成像和光刺激束.
- 在成像和光刺激脉冲之间引入时间延迟.
- 在体内实验以评估交叉通话消除和指标性能.
主要成果:
- 成功地区分了神经元活动信号与光刺激交叉交谈.
- 已证明有效消除交叉通话信号.
- 评估了该方法对遗传编码指标 (GECI) 和遗传编码电压指标 (GEVI) 的影响.
结论:
- 时间复合激发方法有效地消除了双光子全光学生理系统中的交叉通话.
- 这种技术保留了GECI和GEVI的性能,为先进的体内神经电路分析铺平了道路.
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