Rutgers researchers are challenging the commonly held view that drug addiction occurs because users are always going after the high. Based on new animal studies, they say the initial positive feelings of intoxication are short lived -- quickly replaced by negative emotional responses which may be more important in understanding substance abuse.
Fuente : http://www.eurekalert.org/pub_releases/2013-11/ru-...
Fuente : http://www.eurekalert.org/pub_releases/2013-11/ru-...