1717-Neural Circuits of Stress Sensitivity

Paper Talk · Oct 28, 2026 · 23m

The paper investigate how prior adversity increases long-term stress sensitivity in the brain, focusing on the previously overlooked anterior hypothalamic nucleus (AHN). Using advanced imaging and manipulation techniques in mice, researchers discovered that the AHN acts as a critical threat-processing node whose activity scales with negative valence. The study reveals that a network of amygdala neurons projecting to the AHN becomes functionally remodeled following severe stress, thereby driving heightened defensive responses and exaggerated reactions to subsequent stressors.

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