But this is the visual perception of what is the code of life.

这些就是生命密码给人最直观的视觉感受。

Somehow, the eyes of these subjects, even though they were damaged and had no visual perception of light, could tell their brain when there was more or less light.

不知何故，这些受试者的眼睛，即使它们受损并且没有光的视觉感知，也可以告诉他们的大脑什么时候有更多或更少的光线。