FunWhy do some sleep despite the noise and others...

Why do some sleep despite the noise and others wake up with the flight of a fly?

Researchers at Massachusetts General Hospital (USA) have discovered a brain wave pattern that predicts a person's ability to sleep despite outside noise . This discovery, published in Current Biology , could lead to new strategies to avoid noise disturbances from the brain, which would replace traditional earplugs.

Jeffrey Ellenbogen, chief of the division of sleep medicine at Massachusetts General Hospital, and his colleagues conducted an experiment with twelve volunteers over three consecutive nights. During the first night, the individuals spent the night in total calm, but in the following nights, they were subjected to different noises, such as the noise of airplanes, cars passing through the street, a telephone ringing, etc. During this time, the volunteers were subjected to electroencephalography (EEG) that recorded brain activity, and that allowed to identify "axes" or "spindles" of sleep, a type of brain wave that seems to block any sensory information captured by the brain while we sleep. , including sounds. Those who registered the highest number of sleep spindles were more likely to remain asleep during the second and third nights despite the noise outside.

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