DOPAMINE Circuit and ADDICTION

[scai]

Again, trying to do research into addictions...

 

How exactly does the dopamine circuit work and how does it work in addictions (e.g. cigarette, or even video game addictions)

 

And would taking in dopamine medication lead to a person craving cigarettes more? Could a person take dopamine before, let's say, practicing piano and become addicted to piano? Or would he enjoy the activity of piano more? If you lack dopamine while you perform a certain activity (let's say I force myself to play games even though I don't feel any urge to do so) does my addiction to the games weaken?

 

Thanks!