Convergent direct and indirect cortical streams shape avoidance decisions in mice via the midline thalamus.

ABSTRACT: Current concepts of corticothalamic organization in the mammalian brain are mainly based on sensory systems, with less focus on circuits for higher-order cognitive functions. In sensory systems, first-order thalamic relays are driven by subcortical inputs and modulated by cortical feedback, while higher-order relays receive strong excitatory cortical inputs. The applicability of these principles beyond sensory systems is uncertain. We investigated mouse prefronto-thalamic projections to the midline thalamus, revealing distinct top-down control. Unlike sensory systems, this pathway relies on indirect modulation via the thalamic reticular nucleus (TRN). Specifically, the prelimbic area, which influences emotional and motivated behaviors, impacts instrumental avoidance responses through direc

SUBMITTER: Ma J 

PROVIDER: S-EPMC11297946 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature