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眼震慢相起源于前庭末梢,与迷路生物电冲动密切相关,较稳定;快相由于中枢多系统相互作用所产生,且受警戒状态影响而不稳定。区分快慢相是很重要的,AC放大使记录笔回到零线,因此测量真正眼位有困难,正常眼震时眼震能回到接近零位。快相眼位达不到零位称伸展不足眼震,振幅低、慢相速度小。眼震快相超过零线称伸展过度眼震。若不进行修正,全程测量的快相振幅及部分测量的慢相速度均不真实。AC放大器时间常数定为4秒,用每200ms开灯一次共10秒方法找到零线,把所有快相修正到零线后则所有慢相速度相等,即相当于前庭生理状态,然而此仍部分性修正,如频率不规律振幅也不规律,由于速度等于幅度
Nystagmus originates slowly from the vestibular endings and is closely related to labyrinthine bioelectrical impulse, which is more stable. The fast phase is produced by the interaction of central multi-system and unstable by the state of alert. It is important to distinguish between fast and slow phases. AC amplification causes the stylus to return to the neutral line. Therefore, it is difficult to measure true eye position. Normal nystagmus returns to near zero. Eye phase fast reach less than zero said the lack of nystagmus, low amplitude, slow phase speed. Nystagmus faster than the zero line that stretch over nystagmus. Without correction, the amplitude of the fast phase measured throughout and the slow phase velocity measured in part are not true. AC amplifier time constant set to 4 seconds, every 200ms turn on the lights once a total of 10 seconds to find the zero line, all the phase correction to the zero line after all slow phase velocity equal, that is equivalent to the vestibular physiological state, but this still part Sexual corrections, such as irregular frequency amplitudes, are also irregular, due to the speed equal to the magnitude