Non-REM 3
From EEGpedia
- Presence of >20% Delta waves
- Also known as Delta sleep or slow wave sleep (SWS)
- Sometimes a distinction is made between Non-REM 3 (20-50% delta waves) and Non-REM 4 (>50% delta waves)
- K complex and sleep spindles could persist in Non-REM 3, however not prominent
- Time in non-REM 3 sleep decreases with the age:
- Age 20-30: 21% of total sleep
- Age 40-50: 8% of total sleep
- Age 60-70: 2% of total sleep
Non-REM 3 sleep with >20% delta waves (average)
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