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Fiber-optic sensor system for rapid positioning of a microelectrode array

机译:用于快速定位微电极阵列的光纤传感器系统

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A fiber-optic intensity sensor has been developed for vertically positioning microelectrode arrays above the retina of a live frog. Closely spaced fibers illuminate and collect reflections from the retinal surface, and the output is electronically processed to drive an automated positioning circuit. Experimental and theoretical evaluations of fiber types and separation for both specular and diffuse reflectors, in vitro and in vivo, are presented, and multimode fibers on 125-μm centers are chosen for retinal experimentation. The sensor has applications in assessing spatial selectivity of stimulation of a multielectrode array and may be adaptable for lateral positioning. #1998 Optical Society of America OCIS codes: 060.2370, 000.1430, 170.3890.
机译:已经开发了一种光纤强度传感器,用于将微电极阵列垂直定位在活青蛙的视网膜上方。间隔很近的光纤照亮并收集来自视网膜表面的反射,并对输出进行电子处理以驱动自动定位电路。提出了在体外和体内对镜面反射镜和漫反射镜进行光纤类型和分离的实验和理论评估,并选择了在125μm中心的多模光纤进行视网膜实验。该传感器在评估多电极阵列的刺激的空间选择性方面具有应用,并且可以适于横向定位。 #1998美国光学学会OCIS代码:060.2370、000.1430、170.3890。

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