Role of Posterior Medial Thalamus in the Modulation of Striatal Circuitry and Choice Behavior.

ABSTRACT: The posterior medial (POm) thalamus is heavily interconnected with sensory and motor circuitry and is likely involved in behavioral modulation and sensorimotor integration. POm provides axonal projections to the dorsal striatum, a hotspot of sensorimotor processing, yet the role of POm-striatal projections has remained undetermined. Using optogenetics with slice electrophysiology, we found that POm provides robust synaptic input to direct and indirect pathway striatal spiny projection neurons (D1- and D2-SPNs, respectively) and parvalbumin-expressing fast spiking interneurons (PVs). During the performance of a whisker-based tactile discrimination task, POm-striatal projections displayed learning-related activation correlating with anticipatory, but not reward-related, pupil dilation. Inhib

SUBMITTER: Yonk AJ 

PROVIDER: S-EPMC10996534 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature