So the light they're detecting is light that they injected into the brain? I used to have a coworker who said there were "Tubes of light" in your brain that ca

So the light they're detecting is light that they injected into the brain? I used to have a coworker who said there were "Tubes of light" in your brain that caused consciousness or something. It was one of their weirder beliefs. I told them it sounded like the premise for a bad sci-fi.