Why do we get more forgetful when we are stressed?
Quick Answer
Stress hormones like cortisol can interfere with the hippocampus and prefrontal cortex, the brain regions that help form and retrieve memories. A short burst of stress can sharpen attention, but chronic stress usually makes recall worse.
The Full Story
When stress is brief, the brain can prioritize immediate threats and sometimes improve alertness. But when stress stays high, cortisol and adrenaline can disrupt the hippocampus, which is important for memory formation, and the prefrontal cortex, which helps with working memory and focus. This is one reason people may blank out during exams or forget details after a tense event. Scientists have studied these effects for decades, and the pattern is well established: moderate stress may help performance for a short time, but prolonged stress usually harms memory and learning.
Key Facts
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"Why your brain blanks out under pressure"