在费伊南（Faynan）的低地地区，孔雀石的蓝绿色闪光从很远的地方就能看到，这里显然是一个进行冶金术历史研究的好地方。
The lowland district of Faynan, where the blue-green glitter of malachite can be seen from a distance, was an obvious place to study.
目的：闪光刺激视觉诱发电位可用来监测术中视神经及后视路的功能，也可以了解视觉传导通路上脑组织的血供情况。
AIM: Flash visual evoked potentials (F-VEP) can monitor the function of optic nerve and rear visual pathway, and also know the blood supply of brain tissue near visual pathway.
传统的方法是采用闪光视觉诱发电位和图形视觉诱发电位来进行术中的视功能监护，但是这些检测方法的副作用较大，易造成眼球损伤，对病人造成伤害。
The traditional measurement usually USES flash VEP and pattern VEP to monitor the vision channel. But these methods have strong side effect, they can damage eyeball and damage the patients.
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