Control of representation updating by higher-order thalamus enables history-based decision-making.

Interactions between the posterior parietal cortex and pulvinar are necessary to maintain sensory history representations for decision-making in mice.

• Why it matters: Understanding how the brain dynamically updates internal representations based on past experiences is crucial for explaining adaptive behavior, yet the neural mechanisms remain unclear.
• What they did: Using multi-area single-unit recordings and optogenetics in mice, the study examined the roles of PPC, PUL, and TRN in sensory history encoding and updating.
• The result: Findings suggest that the PUL and PPC work together to support decision-making based on sensory history, with TRN-mediated inhibition enabling updates in response to changing sensory patterns.