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• W1987959094 abstract "Cues in the environment associated with drug use draw the attention of addicts, elicit approach, and motivate drug-seeking and drug-taking behavior, making abstinence difficult. However, preclinical studies have identified large individual differences in the extent to which reward cues acquire these incentive motivational properties. For example, only in some rats does a spatially discrete food cue become attractive, eliciting approach and engagement with it, and acts as an effective conditioned reinforcer. Moreover, a discrete cocaine cue also acquires greater motivational control over behavior in rats prone to attribute incentive salience to a food cue. In this study, we asked whether there is similar individual variation in the extent to which interoceptive cues produced by cocaine itself instigate cocaine-seeking behavior. After quantifying individual variation in the propensity to attribute incentive salience to a food cue, rats were trained to self-administer cocaine in the absence of an explicit conditional stimulus. We then assessed motivation for cocaine by: (1) performance on a progressive ratio schedule, and (2) the degree to which a cocaine ‘prime’ reinstated cocaine-seeking following extinction of self-administration behavior. We found that rats prone to attribute incentive salience to a food cue worked harder for cocaine, and showed more robust cocaine-induced reinstatement. We conclude that there is considerable individual variation in the motivational properties of cocaine itself, and this can be predicted by the propensity to attribute incentive salience to reward cues." @default.
• W1987959094 created "2016-06-24" @default.
• W1987959094 creator A5029245318 @default.
• W1987959094 creator A5040052363 @default.
• W1987959094 date "2011-04-06" @default.
• W1987959094 modified "2023-09-26" @default.
• W1987959094 title "Individual Variation in the Motivational Properties of Cocaine" @default.
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• W1987959094 doi "https://doi.org/10.1038/npp.2011.48" @default.
• W1987959094 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3138662" @default.
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