physiological nystagmus

例句：

1. 1. The patient's physiological nystagmus was causing him distress.
   患者的生理性眼震使他感到痛苦。
2. 2.The researcher found that the physiological nystagmus could be a sign of brain damage.
   研究者发现，生理性眼震可能是大脑损伤的迹象。
3. 3. The doctor explained that the patient's physiological nystagmus was due to an imbalance in his brain activity.
   医生解释说，患者的生理性眼震是由于他的大脑活动失衡导致的。