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Features of Delta Brain Waves
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Features of Delta Brain Waves

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Classification and features of Delta Brain Waves

Similar to other brain waves, Delta waves are found out through Electroencephalography (EEG). The delta waves are generally defined based on frequency in range of one to four hertz through various classifications that is placed in boundaries between 0.5 and two hertz. They are slowest brainwaves with highest amplitude. Delta waves usually start appearing with stage 3 sleep and during stage 4 almost complete spectral activity is based on delta waves. The stage 3 sleep is considered have less than fifty percent activity of delta waves and stage four sleep contains more than fifty percent of concentration of delta waves. Such stages have got combined and presently considered as stage N3 slow wave sleep. At the time of N3 SWS stage, more than twenty percent of EEG records are comprised of delta waves. Usually delta waves are present in mammals and are predominant among animals. Delta waves are generally related to another EEG phenomenon called K-complex which is adjacent to the delta waves during slow wave sleep.

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