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Human Brain Waves
| Band | Frequency (Hz) |
Activity | Wave Form |
|---|---|---|---|
| Gamma | More than 30 | Fastest brain wave; processing of information from different brain areas |  |
| Beta | 12 – 30 | Alert consciousness; active thinking, concentration; focused or anxious |  |
| Alpha | 8 – 12 | Relaxed, lucid, calm and peaceful |  |
| Theta | 4 – 8 | Light sleep, meditation, or deep relaxation |  |
| Delta | Less than 4 | Deep dreamless sleep or deep state of meditation |  |
