Once I read a neuroscience article saying that all of our senses are external to the brain -- the brain only 'experiences' electrical signals, not 'reality.' W

Once I read a neuroscience article saying that all of our senses are external to the brain -- the brain only 'experiences' electrical signals, not 'reality.' What if we do have sensory neurons in our brains, though -- wouldn't that lead to a sense of self? Quite literally. I suspect it's something like that. We can do better than say "I don't know." We already know that consciousness can be manipulated with drugs, electrodes, accidents, etc. That rules out the metaphysics and quantum voodoo some people think is necessary. It's not a solved problem, but I'm confident we'll find the a perfectly scientific explanation. In that sense, it's merely a hard problem, not "The Hard Problem."