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Augmenting glutamatergic, but not dopaminergic, activity in the nucleus accumbens shell disrupts responding to a discrete alcohol cue in an alcohol context

Author(s): Valyear MD; Brown A; Deyab G; Villaruel FR; Lahlou S; Caporicci-Dinucci N; Chaudhri N;

Discrete alcohol cues and contexts are relapse triggers for people with alcohol use disorder exerting particularly powerful control over behaviour when they co-occur. Here, we investigated the neural substrates subserving the capacity for alcohol-associated contexts to elevate responding to an alcohol-predictive conditioned stimulus (CS). Specifically, ra ...

Article GUID: 38185906


Neural correlates of recall and extinction in a rat model of appetitive Pavlovian conditioning

Author(s): Brown A; Villaruel FR; Chaudhri N;

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 ...

Article GUID: 36496079


Learning processes in relapse to alcohol use: lessons from animal models

Author(s): Valyear MD; LeCocq MR; Brown A; Villaruel FR; Segal D; Chaudhri N;

Rationale: Alcohol use is reliably preceded by discrete and contextual stimuli which, through diverse learning processes, acquire the capacity to promote alcohol use and relapse to alcohol use. Objective: We review contemporary extinction, renewal, reinstatement, occasion setting, and sex differences research within a conditioning framework of relapse to ...

Article GUID: 36264342


The rodent medial prefrontal cortex and associated circuits in orchestrating adaptive behavior under variable demands

Author(s): Howland JG; Ito R; Lapish CC; Villaruel FR;

Emerging evidence implicates rodent medial prefrontal cortex (mPFC) in tasks requiring adaptation of behavior to changing information from external and internal sources. However, the computations within mPFC and subsequent outputs that determine behavior are incompletely understood. We review the involvement of mPFC subregions, and their projections to th ...

Article GUID: 35131398


Corticostriatal suppression of appetitive Pavlovian conditioned responding

Author(s): Villaruel FR; Martins M; Chaudhri N;

The capacity to suppress learned responses is essential for animals to adapt in dynamic environments. Extinction is a process by which animals learn to suppress conditioned responding when an expected outcome is omitted. The infralimbic cortex (IL) to nucleus accumbens shell (NAcS) neural circuit is implicated in suppressing conditioned responding after e ...

Article GUID: 34880119


Individual Differences in the Attribution of Incentive Salience to a Pavlovian Alcohol Cue.

Author(s): Villaruel FR, Chaudhri N

Front Behav Neurosci. 2016;10:238 Authors: Villaruel FR, Chaudhri N

Article GUID: 28082877


Alcohol-seeking and relapse: A focus on incentive salience and contextual conditioning.

Author(s): Valyear MD, Villaruel FR, Chaudhri N

Behav Processes. 2017 Aug;141(Pt 1):26-32 Authors: Valyear MD, Villaruel FR, Chaudhri N

Article GUID: 28473252


Optogenetic Activation of the Infralimbic Cortex Suppresses the Return of Appetitive Pavlovian-Conditioned Responding Following Extinction.

Author(s): Villaruel FR, Lacroix F, Sanio C, Sparks DW, Chapman CA, Chaudhri N

Cereb Cortex. 2018 Dec 01;28(12):4210-4221 Authors: Villaruel FR, Lacroix F, Sanio C, Sparks DW, Chapman CA, Chaudhri N

Article GUID: 29045570


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