其测量方法是将两个电极放在测试样品的表面，在电极之间施加一个电位差，并测量产生的电流。
It is measured by placing two electrodes on the surface of the test sample, applying a potential difference between them, and measuring the resulting current.
这对电极测的是大脑上两点间的电位差。
The pair of electrodes measures the difference in electrical potential (voltage) between their two positions above the brain.
传统眼震图记录技术是通过皮肤电极引导微弱的角膜、视网膜电位差以间接地观测眼球运动位移参数。
The traditional electronystagmograph observes nystagmus indirectly by detecting slight potential difference between cornea and retina conducted by dermal electrodes.
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