Pokies
The guys who make pokies have been studying the science of gambling addiction for decades. To wit, the bloody annoying music that the pokies make must actually work.
For non-gamblers the pokie music might just be about as annoying as sound can get. Does this mean that the gambling addiction part of the brain is sequestered away with the part that also processes music?
Just maybe, the best way to treat gamblers for their addiction is music therapy.
