Brainwave Frequency Bands (Hz)
Reference guide to electroencephalogram (EEG) neural oscillations. Discovered by Hans Berger in 1924, these electrical patterns reflect distinct states of consciousness.
| Band | Frequency (Hz) | Mental State | Associated Function |
|---|---|---|---|
| Delta (δ) | 0.5 – 4.0 Hz | Deep Non-REM Sleep | Growth hormone release, cellular regeneration, deep restorative healing. |
| Theta (θ) | 4.0 – 8.0 Hz | REM Sleep, Hypnagogia, Deep Meditation | Vivid imagery, memory consolidation, intuition, subconscious processing. |
| Alpha (α) | 8.0 – 13.0 Hz | Relaxed Alertness, Flow State | Stress reduction, mental clarity, bridge between conscious and subconscious mind. |
| Beta (β) | 13.0 – 30.0 Hz | Active Thinking, Focus, Problem Solving | Analytical logic, decision making, conversational alertness. |
| Gamma (γ) | 30.0 – 100.0 Hz | Peak Performance, Insight Synthesis | Simultaneous multi-sensory processing, 'Eureka!' moments, hyper-focus. |
Want to hear these frequencies live?
Our Brainwave Entrainment Studio generates precise dual-carrier binaural beats in your browser.
Cite This Reference
GemsMakers Psychoacoustics Laboratory. (2026). Human Brainwave Frequency Bands (EEG Delta-to-Gamma Reference). GemsMakers.com. https://gemsmakers.com/brainwave-frequencies-guide.php