| Brain-wave activity ranges from fully awake to deep dreamless sleep. This activity is categorized into five primary groups: Delta, Theta, Alpha, Beta, and Gamma. | |
| Delta 0.1-3 Hz |
deep sleep, lucid dreaming, increased immune functions |
| Theta 3-8 Hz |
deep relaxation, meditation, increased memory, focus, creativity, lucid dreaming, trance state, hypnosis |
| Alpha 8-12 Hz |
light relaxation, "super learning", positive thinking, light trance, hypnosis |
| Low Beta 12-15 Hz |
relaxed focus, improved attentive abilities |
| Midrange Beta 15-18 Hz |
increase mental ability, focus, alertness, IQ |
| High Beta above 18 Hz |
fully awake, normal state of alertness, stress and anxiety |
| Gamma 40 Hz |
associated with information-rich task processing and high-level information processing |