Addiction and the brain antireward system.
Level 5 - mechanism / opinion, no new human data
Narrative review and theoretical framework based on mechanistic neurobiological reasoning without new empirical human data.
PubMed 18154498 · doi:10.1146/annurev.psych.59.103006.093548
What was done
The authors synthesized a neurobiological and opponent-process framework to conceptualize persistent motivational dysregulations and relapse vulnerability across the addiction cycle, incorporating reward pathways, antireward systems, and neuroendocrine stress responses.
What was found
The abstract describes a theoretical framework and provides no quantitative data. The model posits that addiction involves decreased reward system function (reduced dopamine and opioid peptide activity) and progressive recruitment of antireward systems (increased corticotropin-releasing factor activity), resulting in an allostatic state with a chronically altered reward set point that drives compulsive drug use.
Why it matters
This framework conceptualizes addiction beyond positive reinforcement, highlighting how recruitment of antireward and stress systems produces negative emotional states that fuel compulsive drug taking and relapse.
Limits
As a conceptual narrative review, no original human experimental data, sample sizes, controls, or quantitative effect estimates are reported.
Cited by
- supports Pushing dopamine-driven activities (such as food, exercise, work, or sex) to the maximum leads to a dopamine-depleted state where one feels understimulated, requires more energy for the same output, and seeking further dopamine reactivation drives dopamine levels deeper into a trough.