The experiment doesn't prove what you think it does. You haven't proved a brain "played doom", which entails a series of experiential states. You don't know what the "brains' did. You only know your experience of the reporting of the scientist, which was quite erroneous.

Also it's your proposition to prove. Don't try to shift your failed theory on to me. Show me where in the brain your consciousness is. Which "chemical"? I'll wait here.