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视网膜ON和OFF通路的不对称激活由AOSLO拉斯特扫描视觉刺激

Sara S Patterson^1,2, Yongyi Cai³, Qiang Yang⁴

¹Flaum Eye Institute, University of Rochester Medical Center, Rochester, NY, 14642.

bioRxiv : the preprint server for biology

|January 7, 2025

概括

适应光学扫描光眼镜 (AOSLO) 使用短暂的闪光来刺激视网膜. 这种间歇性刺激会影响视网膜的ON和OFF通路,改变细胞活动和反应模式.

科学领域:

眼科和视觉科学眼科和视觉科学
神经科学是一个神经科学.
生物医学成像技术生物医学成像技术

背景情况:

适应光学扫描光眼镜 (AOSLO) 在体内提供高分辨率的视网膜成像和刺激传递.
AOSLO刺激涉及暂时调节的激发光,向视网膜部位传递短暂的闪光 (33-40毫秒).
了解这种间歇性刺激对视网膜通路的影响对于解释基于AOSLO的功能研究至关重要.

研究的目的:

调查间歇性光刺激对视网膜ON和OFF通路的影响,这是AOSLO固有的.
评估AOSLO中的拉斯特扫描背景如何影响视网膜细胞的ON和OFF活动和响应特性.

主要方法:

在体内使用成像与适应光学扫描光眼镜镜 (AOSLO) 结合使用.
作为间歇性视觉刺激的一种形式,利用了状扫描的背景.
在这些刺激条件下监测和分析了视网膜ON和OFF通路的活性.

主要成果:

拉斯特扫描的背景显著夸大了ON和OFF路径之间的现有不对称性.
观察到基线活性升高,特别是在视网膜ON细胞中.
在视网膜OFF细胞中检测到增加的响应纠正,一种信号处理形式.

结论:

在AOSLO中间歇性光刺激会影响视网膜通路功能,特别是突出显示ON-OFF通路不对称性.
这些发现表明,AOSLO的刺激方法可以调节神经元活动,影响基线水平和响应特征.
这项研究提供了关于AOSLO独特刺激模式如何影响视网膜信号处理的关键见解.

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