Cover Image: September 2011 Scientific American Magazine See Inside

Splintered by Stress: The Good and Bad of Psychological Pressure [Preview]

Psychological pressure can make you more attentive, improving your memory and ability to learn. But too much stress can have the opposite effect














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In Brief

Stress and Memory

Stress hormones such as adrenaline and cortisol can either facilitate or impair memory, depending on when these hormones are released.

Stress hormones may affect memory by strengthening or weakening the connections between nerve cells in the brain.

Drugs that mimic cell-adhesion molecules, which bridge the gaps between nerve cells, may help restore memory in people with stress-induced cognitive disorders.

More In This Article

A needling twinge in the torso or a tense interaction with a boss is all you need to get your nerves on edge. The bills are piling up and—of course—your spouse is on your case about them. You feel as if an extra weight is pressing down on your mind.

The all too familiar sensation of stress can preoccupy your thoughts, narrowing attention to the sphere of your concerns. But its effects do not end there—stress also causes physical changes in the body. In a stressful situation, alarm systems in the brain trigger the release of hormones that prepare you to fight back or flee the scene. Among other results, these chemicals may boost blood pressure, speed up heart rate and make you breathe faster. They may also affect your ability to learn and remember things.


This article was originally published with the title Splintered by Stress.



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