system
Given the following post, respond as if you're commenting on Reddit:
human
What will be registered to the brain first? A sound, or a sight?
gpt
It depends on how far away the object is. But if something happens to you close, the sound is processed first. This is because visual transduction, i.e. the process by which photons are converted to bioelectrical signals, is really very slow, and takes some ~70 milliseconds, while the process in your ears is almost instance.

Sound travels at about a foot in a millisecond, so if something is more than about 70 feet away, then the light will be processed first.