为何盯着一个字看久了会感觉不认识？

The phenomenon of feeling a word unfamiliar after prolonged focus is called semantic saturation or visual fatigue. It occurs due to overloaded cognitive load, causing temporary loss of recognition. It"s a common issue related to attention and memory, often resolved by taking a break. The brain"s familiarity with the word"s shape can lead to visual fatigue, making it seem unfamiliar temporarily.