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Howland, John G.; Ito, Rutsuko; Lapish, Christopher C.; Villaruel, Franz R.
Neuroscience and biobehavioral reviews, 04/2022, Letnik: 135Journal Article
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 the striatum and amygdala in two broad types of tasks in rodents: 1) appetitive and aversive Pavlovian and operant conditioning tasks that engage mPFC-striatum and mPFC-amygdala circuits, and 2) foraging-based tasks that require decision making to optimize reward. We find support for region-specific function of the mPFC, with dorsal mPFC and its projections to the dorsomedial striatum supporting action control with higher cognitive demands, and ventral mPFC engagement in translating affective signals into behavior via discrete projections to the ventral striatum and amygdala. However, we also propose that defined mPFC subdivisions operate as a functional continuum rather than segregated functional units, with crosstalk that allows distinct subregion-specific inputs (e.g., internal, affective) to influence adaptive behavior supported by other subregions. •Rodent mPFC helps orchestrate responses under changing/conflicting cue-outcome contingencies and affective valence.•Rodent mPFC performs dynamic, recurrent computations to implement effective strategies during foraging and decision-making.•Functional connectivity between subregions of medial prefrontal cortex and striatum is emphasized.•Priorities for future research are identified.
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