Create a 4 pages page paper that discusses learning & physiological psychology. For the rats a daily retrieval from drug related memories at 10 minutes to an hour though not 6 hours earlier that the extinction session, attenuating drug originating reinstatements, spontaneous recoveries and further conditioned drug’s effects renewal and drugs seeking. For the heroin addicts, the retrieval on the drug-related memories at 10 minutes prior to the extinction period attenuated cue triggered heroin craves 1, 30 to 180 days after. A memory retrieval extinction process served to replicate the study to humans in lowering cravings and abstinences relapses (Ecker, 2012).