Article ; Online: Inactivation of the Basolateral Amygdala to Insular Cortex Pathway Makes Sign-Tracking Sensitive to Outcome Devaluation.
2022 Volume 9, Issue 5
Abstract: Goal-tracking (GT) rats are sensitive to Pavlovian outcome devaluation while sign-tracking (ST) rats are devaluation insensitive. During outcome devaluation, GT rats flexibly modify responding to cues based on the current value of the associated outcome. ...
Abstract | Goal-tracking (GT) rats are sensitive to Pavlovian outcome devaluation while sign-tracking (ST) rats are devaluation insensitive. During outcome devaluation, GT rats flexibly modify responding to cues based on the current value of the associated outcome. However, ST rats rigidly respond to cues regardless of the current outcome value. Prior work demonstrated disconnection of the basolateral amygdala (BLA) and anterior insular cortex (aIC) decreased both GT and ST behaviors. Given the role of these regions in appetitive motivation and behavioral flexibility, we predicted that disrupting BLA to aIC pathway during outcome devaluation would reduce flexibility in GT rats and reduce rigid appetitive motivation in ST rats. We inhibited the BLA to aIC pathway by infusing inhibitory DREADDs (hM4Di-mcherry) or control (mCherry) virus into the BLA and implanted cannulae into the aIC to inhibit BLA terminals using intracranial injections of clozapine N-oxide (CNO). After training, we used a within |
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MeSH term(s) | Amygdala/physiology ; Animals ; Basolateral Nuclear Complex/physiology ; Insular Cortex ; Motivation ; Rats ; Rats, Long-Evans |
Language | English |
Publishing date | 2022-09-28 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 2800598-3 |
ISSN | 2373-2822 ; 2373-2822 |
ISSN (online) | 2373-2822 |
ISSN | 2373-2822 |
DOI | 10.1523/ENEURO.0156-22.2022 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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