Teen sleep deprivation at epidemic level

Carolyn Walworth, 17, often reaches a breaking point around 11 p.m., when she collapses in tears. For 10 minutes or so, she just sits at her desk and cries, overwhelmed by unrelenting school demands. She is desperately tired ...

Oct 09, 2015
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How the brain's wiring leads to cognitive control

How does the brain determine which direction to let its thoughts fly? Looking for the mechanisms behind cognitive control of thought, researchers at the University of Pennsylvania, University of California and United States ...

Oct 06, 2015
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That all-nighter is not without neuroconsequences

As you put the finishing touches on your paper, you notice the sun rising and fantasize about crawling in bed. Your vision and hearing are beginning to distort and the words staring back at you from the monitor have lost ...

Sep 30, 2015
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Doctors warn about the risks of water intoxication

While emphasis is often placed on keeping athletes and outdoor enthusiasts properly hydrated, too much water can be just as dangerous. Exercise-associated hyponatremia (EAH), also known as water intoxication, results in an ...

Sep 29, 2015
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Alertness is the state of paying close and continuous attention, being watchful and prompt to meet danger or emergency, or being quick to perceive and act. It is related to psychology as well as to physiology. A lack of alertness is a symptom of a number of conditions, including narcolepsy, attention deficit disorder, chronic fatigue syndrome, depression, Addison's disease, or sleep deprivation. The word is formed from "alert", which comes from the Italian "all'erta" (on the watch, literally, on the height; 1618)

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