Objective. To investigate the relationship between nerve root movement and the electrophysiological values during an intraoperative SLR test.

目的：为了研究在术中直腿抬高实验过程中，神经根运动和电生理的关系。

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Study Design. This study is aimed to investigate the changes of nerve root functions during the straight leg raising (SLR) test in vivo.

研究设计：研究目的是在活体观察直腿抬高过程中神经根功能的变化。

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The method is first used to test detection of dynamic systematic errors for SLR tracking telescope at Shanghai Observatory.

本方法首先用于检测上海天文台SLR跟踪望远镜动态系统差的试算。

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