physiological nystagmus (noun)

1. While gazing deeply into each other's eyes, the couple's physiological nystagmus became more apparent.

2. In the anime series, the protagonist's physiological nystagmus is often used to convey their strong emotions.

3. According to Greek mythology, certain gods were believed to have the ability to control physiological nystagmus as a sign of their power.

4. In the futuristic science fiction novel, characters with enhanced vision implants exhibit unique patterns of physiological nystagmus.