A transient thalamocortical oscillatory event, often around 10–16 Hz in humans, with frequency boundaries depending on the measurement convention. Its timing relative to other events can matter beyond its total count.
Sleep spindles are bursts of oscillatory brain activity that occur during non-REM (NREM) sleep, particularly during stage 2 sleep. They are characterized by their frequency, which typically ranges from 12 to 16 Hz, and their duration, which usually lasts for about 0.5 to 2seconds.
