Cited by 436Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesGambling Behavior and Treatments

Incentive Sensitization by Previous Amphetamine Exposure: Increased Cue-Triggered “Wanting” for Sucrose Reward

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Wyvell, Cindy L., Berridge, Kent C.·2001·The Journal of Neuroscience

Abstract

We reported previously that an amphetamine microinjection into the nucleus accumbens enables Pavlovian reward cues in a conditioned incentive paradigm to trigger excessive instrumental pursuit. Here we show that sensitization caused by previous amphetamine administration also causes reward cues to trigger excessive pursuit of their associated reward, even when sensitized rats are tested in a drug-free state. Rats learned to lever press for sucrose pellets, and they separately learned to associate sucrose pellets with Pavlovian cues (30 sec auditory cues). Amphetamine sensitization was induced by six daily injections of amphetamine (3 mg/kg, i.p.; controls received saline). Rats were tested for lever pressing under extinction conditions 10 d later, after a bilateral microinjection of intra-accumbens vehicle or amphetamine (5 microg/0.5 microl per side). Cue-triggered pursuit of sucrose reward was assessed by increases in pressing on the sucrose-associated lever during intermittent presentations of a free conditioned stimulus (CS+) sucrose cue. Sensitized rats pressed at normal levels during baseline and during the CS-, but the CS+ triggered 100% greater increases in pressing from sensitized rats than from control rats after vehicle microinjection. Sensitization therefore enhanced the incentive salience attributed to the CS+ even when rats were tested while drug-free. For control rats, a microinjection of intra-accumbens amphetamine was needed to produce the same enhancement of cue-triggered reward "wanting." The amphetamine microinjection also interacted synergistically in sensitized rats to produce intrusive cue-triggered pursuit behaviors (e.g., investigatory sniffing) that interfered with goal-directed lever pressing. These results support the incentive-sensitization theory postulate that sensitization causes excessive cue-triggered "wanting" for an associated reward.

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Crossref · 10.1523/jneurosci.21-19-07831.2001

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  1. Dickinson AJ, Balleine B (2001) The role of learning in motivation. In: Steven's handbook of experimental psychology, Ed 3. New York: Wiley, in press.

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Authors
Wyvell, C. L., & Berridge, K. C.
Affiliations
University of Michigan (US)
Venue
The Journal of Neuroscience
Published
2001-10-01
Volume
21
Issue
19
Pages
7831-7840
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2145827196
Cited by
436
References
66
Citations by year
2026: 4 · 2025: 5 · 2024: 6 · 2023: 11 · 2022: 5 · 2021: 12 · 2020: 52 · 2019: 9 · 2018: 9 · 2017: 11 · 2016: 17 · 2015: 17 · 2014: 17 · 2013: 28 · 2012: 34
FWCI
5.77
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (9604408)
  • National Institute on Drug Abuse (F31 DA0599901)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Social Sciences › Psychology › Clinical Psychology › Gambling Behavior and Treatments
Keywords
amphetamine sensitization, incentive salience, nucleus accumbens, instrumental behavior, goal-directed behavior, sucrose reward, incentive-sensitization theory
MeSH terms
Acoustic Stimulation, Amphetamine, Animals, Behavior, Animal, Conditioning, Classical, Conditioning, Operant, Cues, Extinction, Psychological, Female, Injections, Intraperitoneal, Microinjections, Motivation, Nucleus Accumbens, Reinforcement, Psychology, Reward, Sucrose, Rats, Sprague-Dawley, Amphetamine-Related Disorders, Rats

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