Sleep spindle

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

[edit] Function

Sleep spindles may represent periods where the brain is inhibiting processing to keep the sleeper in a tranquil state. Along with K-complexes they are defining characteristics of stage 2 sleep.

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