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Rats' performance on a progressive-ratio schedule maintained by sucrose (0.6M, 50 μl) and corn oil (100%, 25 μl) reinforcers was assessed using a model derived from Killeen's (1994) theory of(More)
There is evidence that the core of the nucleus accumbens (AcbC) is involved in inter-temporal choice behaviour. A new behavioural protocol was used to examine the effect of destruction of the AcbC on(More)
Mathematical models can assist the interpretation of the effects of interventions on schedule-controlled behaviour and help to differentiate between processes that may be confounded in traditional(More)
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