HUFFINGTON POST
09/19/2014 08:39 am ET Updated Sep 19, 2014

How Your Brain Actually Makes Decisions While You Sleep

Michel Tcherevkoff via Getty Images

The idea that during sleep our minds shut down from the outside world is ancient and one that is still deeply anchored in our view of sleep today, despite some everyday life experiences and recent scientific discoveries that would tend to prove that our brains don’t completely switch off from our environment.

On the contrary, our brains can keep the gate slightly open. For example, we wake up more easily when we hear our own name or a particularly salient sound such as an alarm clock or a fire alarm compared to equally loud but less relevant sounds.

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