Take the 2-minute tour ×  I've been reading about the new
phenomenon called "arousal addiction". The context in which this
term is used is Internet, Porn and/or video game
addiction(cummulatively Internet Addiction Disorder - IAD).
Dopamine and Dopamine receptor D2 are sometimes mentioned, as
being affected by exposure to a new, novel stimuli.  I'm
interested if there are other forms of "arousal" that may
involve more than just Dopamine. For example, I know that there
are 4 neuromodulators in the human brain:    • Dopamine   •
Serotonin   • Choline   • Noradrenaline  For example, if a
person likes horror movies to the point of addiction, is it
Dopamine, or is it Noradrenaline that the person enjoys? If a
person is addicted to comfort foods, is it Dopamine or
Serotonin?  Thank you!  share|improve this question add comment
1 Answer  Depends on what you mean by "addiction": defined,
addiction usually requires both psychological and physiological
dependence, but conversationally we sometimes only talk about
psyc