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ID: #48224
Reindeer Sleep
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The researchers found that the reindeer brain, like the human brain, knows how sleep it needs. They measured the brain activity of four adult female reindeer using electrodes attached to their scalps, and observed their behavior during different seasons and light conditions. They discovered that the reindeer the same amount of time asleep regardless of the season, and that their sleep were similar to those of humans. However, the reindeer also had a unique ability to sleep while chewing the cud. This state was similar to non-REM sleep, and helped the reindeer reduce their sleepiness after eating. The researchers speculated that this ability might be especially important during the summer, when the reindeer need to eat a lot of food and fat for the winter. By sleeping while digesting, the reindeer could balance their need for sleep and nutrition.
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