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Sleep spindle

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Stage2sleep

A Sleep spindle is burst of brain activity visible on an EEG that occurs during stage 2 sleep. It consists of 12-16 Hz waves that occur for 0.5 to 1.5 seconds.

Uses of Sleep SpindlesEdit

Sleep spindles are one of several measures employed by the brain to keep a sleeper in an unconscious state. This pattern is produced during sleep to inhibit the processing of unnecessary information, which would especially interrupt stage 2 sleep. This is why they are defining characteristics (along with K complexes of stage 2 sleep. During deeper stages (3 and 4) subjects are more difficult to awaken (with the exception of the transitory stage 1).

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