Does each “buzz” give a different effect? How does the brain know which part to let the serotonin into to get a specific high? Like is there the same “buzz” between lets say alcohol, coke, heroin, gambling, cigarettes, weed or painkillers? How does your brain know how to let loose the “high” part? How does a alcoholic different from a alcoholic or gambling addict? Is there like a thin line that runs through all addictions? And this is why so many fall under the very vague umbrella of just addicts?? Can explain more if need be.
We don’t understand how the brain functions. Neuroscientists know that serotonin has something to do with it because some drugs effect serotonin production/ absorption/ re-uptake and they also effect mood, but they don’t understand the mechanism.
Even the idea that consciousness and the “self” are located in the brain isn’t as well founded as you might think. It might be a continuation of the concept of “duality” where the body and “mind” are separate. Same idea behind a soul.
Anyway, we don’t understand consciousness which would be prerequisite to explain altered consciousness.