Novelty seeking, incentive salience and acquisition of cocaine self-administration in the rat.

Behavioural Brain Research
Joshua S BeckmannM T Bardo

Abstract

It has been suggested that incentive salience plays a major role in drug abuse and the development of addiction. Additionally, novelty seeking has been identified as a significant risk factor for drug abuse. However, how differences in the readiness to attribute incentive salience relate to novelty seeking and drug abuse vulnerability has not been explored. The present experiments examined how individual differences in incentive salience attribution relate to novelty seeking and acquisition of cocaine self-administration in a preclinical model. Rats were first assessed in an inescapable novelty task and a novelty place preference task (measures of novelty seeking), followed by a Pavlovian conditioned approach task for food (a measure of incentive salience attribution). Rats then were trained to self-administer cocaine (0.3 or 1.0 mg/kg/infusion) using an autoshaping procedure. The results demonstrate that animals that attributed incentive salience to a food-associated cue were higher novelty seekers and acquired cocaine self-administration more quickly at the lower dose. The results suggest that novelty-seeking behavior may be a mediator of incentive salience attribution and that incentive salience magnitude may be an indicator...Continue Reading

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Citations

Jun 12, 2013·Neuropharmacology·Terry E RobinsonBenjamin T Saunders
Jun 13, 2013·Neuropharmacology·Bianca Jupp, Jeffrey W Dalley
Dec 15, 2010·Nature·Shelly B FlagelHuda Akil
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