In the brain there is an emergent reflection of a material reality happening where the brain is creating a fully constructed model of the world with its own independent existence, our day to day experience is a dream that's cohering to sense input. Whether or not that is what consciousness or our apparent point of view lives I don't know because I don't see how to logically prove it either way, but experimentally it seems like it does because our experiences align, and because you can alter people's state of consciousness through chemical and physical means.

What you're saying is the brain creates the illusion of a consciousness, that's something you would need more proof for now you're just assuming it because it's the dominant view based op on our materialistic culture.

If anything you are arguing the world is an illusion, not consciousness.

You can change what inputs a being get visually & other stimuli.

But you don't the change consciousness itself. The pictures & emotions change, but the experiencer doesn't.

Same with dementia, the body & connection to the world changes, the inner consciousness & it's ability to experience doesn't.

The irony is that we believe the world is real because our brain/conciousness does a really good job. Take for instance the simple fact that certain cultures can't distuingish green from blue. Or certain animals almost live based on feel of audio. Which experience of reality is the "real" world?

Materialism feels natural because our world feels real. But what we think is real and solid is what our brain has created for us, in reality both us and the world is very intertwined and hard to separate experience & experiencer.