Recently, the news media has picked up on a study in Current Biology that, supposedly, explains why people get testy after a sleepless night.
In theory, the study shows that people are more emotional, more reactive, and more primitive after sleeplessness. Quoting the news article at Yahoo!:
A shutdown of the prefrontal lobe - a brain region that normally keeps emotions under control -- is the reason for heightened emotional response in sleep-deprived people...
Well, not exactly. The...

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