nDopamine stimulates pleasure centers and functions in positive reinforcement
ualcohol increases Dopamine concentrations in nucleus
acumbens and other reward
centers
nSerotonin functions in mood, sleep and positive reinforcement
u alcoholics and
thrill seekers have low serotonin levels and alcohol consumption ( and thrill activities) brings
theses levels up to
normal.
uSerotonergic drugs have reduced alcohol consumption by alcoholics.
nEndorphins and Enkephalins are natural neural peptides that bind to opiate receptors and produce euphoric
effects.
uEndorphins and Enkephalins are released by the brain
when exposed to
alcohol
uEuphoria seems to stimulate further drinking