The Role of the Nucleus Accumbens in Instrumental Conditioning: Evidence of a Functional Dissociation between Accumbens Core and Shell
نویسندگان
چکیده
منابع مشابه
The role of the nucleus accumbens in instrumental conditioning: Evidence of a functional dissociation between accumbens core and shell.
In three experiments we examined the effect of bilateral excitotoxic lesions of the nucleus accumbens core or shell subregions on instrumental performance, outcome devaluation, degradation of the instrumental contingency, Pavlovian conditioning, and Pavlovian-instrumental transfer. Rats were food deprived and trained to press two levers, one delivering food pellets and the other a sucrose solut...
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15 صفحه اولRole of the nucleus accumbens core and shell in Pavlovian–instrumental transfer
When an initially neutral stimulus has been paired in Pavlovian fashion with an appetitive outcome such as food, noncontingent presentation of this conditioned stimulus (CS) can enhance ongoing instrumental responding, a phenomenon termed Pavlovian–instrumental transfer (PIT). In its simplest form, PIT is assessed by presenting a CS for food while the subject is responding in extinction on a si...
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چکیده ندارد.
Dissociation of core and shell single-unit activity in the nucleus accumbens in free-choice novelty.
Core and shell regions of the nucleus accumbens (NAcc) have been implicated in different aspects of goal-directed behavior. To assess these differences at the neuronal level, we evaluated core and shell single-unit activity in eight rats during one-trial, free-choice entry into a novel compartment. Changes in firing rate during approach of (orientation toward) and entry into (nose cross) novelt...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 2001
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.21-09-03251.2001