Keyword search (4,163 papers available)

"Villaruel FR" Authored Publications:

Title Authors PubMed ID
1 Augmenting glutamatergic, but not dopaminergic, activity in the nucleus accumbens shell disrupts responding to a discrete alcohol cue in an alcohol context Valyear MD; Brown A; Deyab G; Villaruel FR; Lahlou S; Caporicci-Dinucci N; Chaudhri N; 38185906
PSYCHOLOGY
2 Neural correlates of recall and extinction in a rat model of appetitive Pavlovian conditioning Brown A; Villaruel FR; Chaudhri N; 36496079
PSYCHOLOGY
3 Learning processes in relapse to alcohol use: lessons from animal models Valyear MD; LeCocq MR; Brown A; Villaruel FR; Segal D; Chaudhri N; 36264342
PSYCHOLOGY
4 The rodent medial prefrontal cortex and associated circuits in orchestrating adaptive behavior under variable demands Howland JG; Ito R; Lapish CC; Villaruel FR; 35131398
PSYCHOLOGY
5 Corticostriatal suppression of appetitive Pavlovian conditioned responding Villaruel FR; Martins M; Chaudhri N; 34880119
PSYCHOLOGY
6 Individual Differences in the Attribution of Incentive Salience to a Pavlovian Alcohol Cue. Villaruel FR, Chaudhri N 28082877
PSYCHOLOGY
7 Alcohol-seeking and relapse: A focus on incentive salience and contextual conditioning. Valyear MD, Villaruel FR, Chaudhri N 28473252
PSYCHOLOGY
8 Optogenetic Activation of the Infralimbic Cortex Suppresses the Return of Appetitive Pavlovian-Conditioned Responding Following Extinction. Villaruel FR, Lacroix F, Sanio C, Sparks DW, Chapman CA, Chaudhri N 29045570
PSYCHOLOGY

 

Title:Neural correlates of recall and extinction in a rat model of appetitive Pavlovian conditioning
Authors:Brown AVillaruel FRChaudhri N
Link:https://pubmed.ncbi.nlm.nih.gov/36496079/
DOI:10.1016/j.bbr.2022.114248
Publication:Behavioural brain research
Keywords:FosInfralimbic cortexNeural networkNucleus accumbensParaventricular nucleus of the thalamus
PMID:36496079 Category: Date Added:2022-12-11
Dept Affiliation: PSYCHOLOGY
1 Center for Studies in Behavioural Neurobiology, Department of Psychology, Concordia University, Montreal, QC, Canada. Electronic address: alexabrown1212@gmail.com.
2 Center for Studies in Behavioural Neurobiology, Department of Psychology, Concordia University, Montreal, QC, Canada.

Description:

Extinction is a fundamental form of inhibitory learning that is important for adapting to changing environmental contingencies. While numerous studies have investigated the neural correlates of extinction using Pavlovian fear conditioning and appetitive operant reward-seeking procedures, less is known about the neural circuitry mediating the extinction of appetitive Pavlovian responding. Here, we aimed to generate an extensive brain activation map of extinction learning in a rat model of appetitive Pavlovian conditioning. Male Long-Evans rats were trained to associate a conditioned stimulus (CS; 20 s white noise) with the delivery of a 10% sucrose unconditioned stimulus (US; 0.3 ml/CS) to a fluid port. Control groups also received CS presentations, but sucrose was delivered either during the inter-trial interval or in the home-cage. After conditioning, 1 or 6 extinction sessions were conducted in which the CS was presented but sucrose was withheld. We performed Fos immunohistochemistry and network connectivity analyses on a set of cortical, striatal, thalamic, and amygdalar brain regions. Neural activity in the prelimbic cortex, ventral orbitofrontal cortex, nucleus accumbens core, and paraventricular nucleus of the thalamus was greater during recall relative to extinction. Conversely, prolonged extinction following 6 sessions induced increased neural activity in the infralimbic cortex, medial orbitofrontal cortex, and nucleus accumbens shell compared to home-cage controls. All these structures were similarly recruited during recall on the first extinction session. These findings provide novel evidence for the contribution of brain areas and neural networks that are differentially involved in the recall versus extinction of appetitive Pavlovian conditioned responding.





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