A complete reference table of brainwave frequency bands, sub-bands, associated states, and practical applications. Quick lookup for delta through gamma, plus the Schumann resonance, Solfeggio frequencies, and other notable frequency points.

Appendix A — Complete Brainwave Frequency Reference Table

The Five Primary Bands

Band	Range	Sub-Bands	Dominant State	Associated Practices
Delta	0.5–4 Hz	Slow (0.5–2 Hz) — deep sleep, Fast (2–4 Hz) — drowsy meditation	Dreamless sleep, physical restoration, healing, growth hormone release	Deep sleep (7–9 hrs), Yoga Nidra, body scan meditation
Theta	4–8 Hz	Low (4–6 Hz) — deep meditation, High (6–8 Hz) — creative visualization	Memory integration, creativity, imagery, REM sleep, hypnagogic state	Float tank, shamanic drumming, hypnagogic practice, breathwork
Alpha	8–13 Hz	Low (8–10 Hz) — relaxed calm, High (10–13 Hz) — alert calm	Relaxed attention, witness consciousness, stress recovery, flow foundation	Mindfulness, biofeedback, earthing, box breathing
Beta	13–40 Hz	Low (13–22 Hz) — active focus, High (22–40 Hz) — anxious vigilance	Active cognition, focused work, decision-making, external attention	Task engagement, exercise, analytical work
Gamma	40–100+ Hz	Low (40–60 Hz) — integration, High (60–100+ Hz) — insight	Cross-network integration, insight, compassion, non-dual awareness	40 Hz light/sound, compassion meditation

Notable Frequency Points

Frequency	Name	Context
0.5 Hz	Slow delta resting	Deepest sleep, minimal consciousness
4 Hz	Theta onset	Hypnagogic state, memory integration
7.83 Hz	Schumann resonance	Earth's fundamental EM frequency
8 Hz	Alpha onset	Relaxed wakefulness, stress recovery
10 Hz	Peak alpha	Optimal calm focus, meditation
12 Hz	Alpha-beta transition	Alert relaxation
14–20 Hz	Sensorimotor rhythm (SMR)	Physical calm with focus, ADHD training
40 Hz	Gamma	MIT GENUS protocol, Lutz meditator study
55–80 Hz	High gamma	Deep insight, cognitive binding

Solfeggio Frequencies

Frequency	Claimed Effect	Evidence Status
396 Hz	Liberation from fear	No scientific validation
417 Hz	Facilitating change	No scientific validation
528 Hz	Transformation, DNA repair	Pseudoscientific — unsupported
639 Hz	Harmonious relationships	No scientific validation
741 Hz	Awakening intuition	No scientific validation
852 Hz	Return to spiritual order	No scientific validation
963 Hz	Connection to Source	No scientific validation

Note on Solfeggio Frequencies

These frequencies are included for completeness. They serve as meditation aids and intention anchors but have no scientific validation for the claimed effects. Their value lies in the focused attention and ritual they inspire, not in the specific numbers.

Quick Comparison: Methods Across Bands

Method	Best For	Band	Evidence
Binaural Beats	Theta-low alpha	4–10 Hz	Moderate
Isochronic Tones	All bands, incl. gamma	Any	Moderate-Strong
Photic Stimulation	Alpha (SSVEP), Gamma (GENUS)	10 Hz, 40 Hz	Strong
Breathwork	Alpha-theta	4–13 Hz	Strong
Meditation (long-term)	All bands, gamma coherence	All	Strong
Float Tank	Theta	4–8 Hz	Moderate
Cold Exposure	Gamma spike	40+ Hz	Emerging
Exercise (post)	Alpha enhancement	8–12 Hz	Strong
Earthing	Grounding, Alpha	Indirect	Moderate

Return to Consciousness

Mind Expansion Techniques