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The scientists conducted a
of the sleep patterns of over 500 people. Each
wore a special wristband that tracked their sleep. The study included 98 people from an
village in rural Argentina. These people did not have
to electricity and other
light sources. Their sleep patterns were compared to 464 people living in U.S. city of Seattle, which has
of artificial light
. The scientists discovered that people in the rural village and in the big city got
sleep on the nights leading up to the full moon. The scientists said the artificial light in cities does not seem to affect sleeping
and that, "human sleep is synchronised with lunar
."
