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JoVE Journal
Neuroscience
小鼠视动反射视觉特征选择性的量化
小鼠视动反射视觉特征选择性的量化
JoVE Journal
Neuroscience
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JoVE Journal Neuroscience
Quantification of Visual Feature Selectivity of the Optokinetic Reflex in Mice

小鼠视动反射视觉特征选择性的量化

Full Text
3,279 Views
09:28 min
June 23, 2023

DOI: 10.3791/65281-v

Jiashu Liu1,2, Bao-hua Liu1,2

1Department of Biology,University of Toronto Mississauga, 2Department of Cell and Systems Biology,University of Toronto

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Please note that some of the translations on this page are AI generated. Click here for the English version.

Summary

在这里,我们描述了一种用于量化视动反射的标准方案。它结合了虚拟鼓刺激和视频眼部成像,因此可以精确评估行为的特征选择性及其自适应可塑性。

Transcript

我们对视网膜系统在健康和疾病小鼠模型中的能力感兴趣。目前,我们正在使用视动反射或OKR保险,这是我们的不自主眼球运动,用于稳定视网膜图像,以了解视网膜系统如何促进视网膜先天行为的适应性可塑性。OKR 模型研究通过证明长时间的视网膜刺激或相似的眼反射损伤可以增加行为幅度,从而促进了我们对先天行为可塑性的理解。

并通过研究潜在的分子突触和分泌机制。我们将视频眼图和计算机化虚拟视觉刺激相结合,通过截断自由变化的参数来精确量化 OKR 行为调用。该程序相对简单,可以标准化以适应大规模研究。

我们的协议可以准确分析以包括形状和首选视觉特征,检测正常和病理状况的细微差异,还可以监测由于药物治疗或视觉运动学习而导致的OKR变化。高精度和定量能力使得在纵向研究及其不同的药物治疗或神经监测下比较同一只眼睛的重复OKR测量成为可能。它还为研究 OKR 可塑性的神经溢出和回路机制提供了机会。

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视动反射 视觉特征选择性 小鼠 头部固定 前庭刺激 眼球运动 虚拟鼓系统 垂直光栅 空间频率 时间频率 对比度 亮度 光栅方向 调谐曲线 红外视频眼球造影 眼球运动轨迹 校准 年龄 性别 遗传背景

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