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Alcohol is a commonly used drug that can produce alcohol use disorders (AUDs). Few individuals with AUDs receive treatment and treatment options are complicated by issues with effectiveness and compliance. Alcohol has been shown to differentially affect specific brain regions and an improved understanding of circuit-specific dysregulation caused by alcohol is warranted. Previous work has implicated both the medial prefrontal cortex (mPFC) and basolateral amygdala (BLA) in alcohol-associated plasticity, however studies directly examining the impact of alcohol exposure on this circuit are lacking. The current study employed an optogenetic strategy to investigate the prelimbic mPFC to BLA circuit and changes in circuit activity following chronic intragastric ethanol exposure in male Sprague Dawley rats. We observed monosynaptic connections with light-evoked stimulation of mPFC terminals in the BLA with …