Yale scientists explain how stress hormone cortisol strengthens emotional memories
Yale researchers published findings on October 16, 2026, explaining how the stress hormone cortisol reshapes brain networks to create stronger memories.
Cortisol alters brain communication
Scientists found that cortisol changes how brain networks involved in emotion and memory communicate with one another. This process allows emotional experiences to become more durable within the mind. The study clarifies a mechanism that has been unclear for some time.
Stress impacts memory retention
The research shows stress can reshape communication between specific brain networks to make memories last longer. Certain moments remain difficult to forget because of this biological shift in how the brain functions. Elizabeth Goldfarb noted that understanding these effects helps explain why some impressions are powerful.
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