Chapter

Abnormalities in monetary and other non-drug reward processing in drug addiction

Rita Z. Goldstein

in Decision Making, Affect, and Learning

Published in print March 2011 | ISBN: 9780199600434
Published online May 2011 | e-ISBN: 9780191725623 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199600434.003.0021

Series: Attention and Performance

Abnormalities in monetary and other non-drug reward processing in drug addiction

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Adaptations of the reward circuit to intermittent and chronic supraphysiological stimulation by drugs increase reward thresholds. As a consequence, response to non-drug reinforcers in individuals with chronic drug use or addiction, may be decreased. Clinical symptoms include anhedonia and compulsive drug use, at the expense of the attainment of other rewarding experiences and despite detrimental consequences to the individual's functioning. While most addiction studies focus on the increased valuation of drug reward and drug-related cues, this chapter instead reviews the behavioural and neurobiological evidence for decreased valuation of non-drug reinforcers and cues. Future research should directly address the following question: is processing of drug reward enhanced at the expense of non drug-related reward (at least in certain subgroups of addicted individuals)? Or are these two processes independent?

Keywords: reward; drug addicts; valuation; non-drug reinforcers; anhedonia; drug use

Chapter.  10667 words.  Illustrated.

Subjects: Cognitive Psychology

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