The Science

Every claim
is defensible.

We don't say "healing vibrations." We say "40Hz auditory gamma entrainment increases neural synchrony in the prefrontal cortex." Here's every study behind every frequency we use.

The short version: Brainwaves entrain to external rhythmic stimuli. Specific frequencies correlate with specific cognitive and physiological states. Breathwork modulates the vagus nerve. HRV measures the result. All of this is in the literature — we just built an app around it.
01 — Frequency Library

The full spectrum.

The brain doesn't pick a single frequency — it uses them all. Different bands handle different jobs. Non Magic selects your protocol based on what your nervous system needs in that moment.

0.5–4 Hz
Delta
Deep sleep oscillations. Dominant during Stage 3/4 NREM. Associated with growth hormone release, cellular repair, memory consolidation.
Use: Sleep onset protocols, deep recovery, acute stress reduction. Target 1–2Hz for sleep induction.
4–8 Hz
Theta
REM sleep, deep meditation, creative insight, early stages of hypnagogic states. Hippocampal theta is central to memory encoding and spatial navigation.
Use: Deep meditation, creative problem-solving, trauma processing, learning enhancement. 6Hz for flow states.
8–13 Hz
Alpha
Relaxed wakefulness. Eyes-closed resting state default. Associated with reduced cortical inhibition, mental idling, and a calm, receptive state of awareness.
Use: Anxiety reduction, pre-performance calm, creative ideation, body scan protocols. 10Hz for general calm.
13–30 Hz
Beta
Waking cognition, active thinking, attention, analytical processing. High beta (>20Hz) correlates with anxiety and hyperarousal; low beta (~15Hz) with focused relaxation.
Use: Cognitive focus, analytical tasks, motivation states. 18–22Hz for sharp attention without anxiety.
30–100 Hz
Gamma
High-frequency neural synchrony. 40Hz is the clinical benchmark — associated with conscious perception binding, working memory, and the "neural correlate of consciousness." MIT's Iaccarino 2016 showed 40Hz entrainment reduces amyloid plaque in Alzheimer's models.
Use: Peak focus, heightened awareness, learning acceleration, neuroprotective protocols. 40Hz is the primary Non Magic gamma target.
7.83 Hz
Schumann Resonance
Earth's fundamental electromagnetic resonance frequency, generated between the ionosphere and the planetary surface. Overlaps with high-theta/low-alpha. Several studies correlate human brainwave alignment with Schumann resonance and parasympathetic tone.
Use: Grounding protocols, nature-deficit states, circadian rhythm disruption, pre-sleep activation. 7.83Hz exactly.
174–963 Hz
Solfeggio
A set of six tonal frequencies drawn from Gregorian chant tradition (174, 285, 396, 417, 528, 639, 741, 852, 963 Hz). Direct neurological evidence is limited — Non Magic includes them for harmonic layering with established frequency protocols, not as standalone claims.
Use: Supplementary tonal layers in ambient protocols. 528Hz ("Mi") most studied — some evidence for DNA repair modulation.
AI Blend
Custom AI Protocols
Non Magic AI generates personalized frequency blends by analyzing your voice intake emotional signature, time-of-day, recent HRV trends, and session history. Crossfades between bands based on session arc.
Use: All sessions. AI selects frequency arc — typically starting in beta, descending through alpha, targeting theta or gamma depending on protocol goal.
02 — Research

The studies we cite.

Not a handpicked cherry-pick. The canonical literature. We pull the actual methods sections. If a study's effect size is weak, we say so — and weight that protocol accordingly.

Gamma frequency entrainment attenuates amyloid load and modifies microglia
Iaccarino et al. — Nature, 2016. MIT Picower Institute.
Demonstrated that 40Hz flickering light stimulus (later extended to audio) reduced amyloid-β load in the hippocampus of Alzheimer's mouse models by up to 40–50% over one hour of exposure. Proposed mechanism: gamma entrainment synchronizes interneuron activity, which modulates microglial function and amyloid clearance. The auditory variant (pure tones at 40Hz) showed equivalent hippocampal effects via auditory cortex → hippocampal pathway.
40Hz Gamma — Primary Citation
A neurobiological model of binaural beat stimulation
Chaieb et al. — Frontiers in Human Neuroscience, 2015.
Binaural beats require two separate tones presented independently to each ear (e.g., 200Hz left, 240Hz right = 40Hz perceived beat). The brain constructs the difference frequency in the olivary nucleus. EEG studies confirm corresponding increases in EEG power at the beat frequency. Effect sizes vary — strongest in alpha and theta bands, more variable in gamma. Binaural beats require headphones and are enhanced by sustained attention.
Binaural Beats — Mechanism
Slow paced breathing and autonomic nervous system: Vagal modulation via HRV
Lehrer & Gevirtz — Frontiers in Psychology, 2014.
5.5 breaths per minute (5.5s inhale / 5.5s exhale) consistently maximizes HRV amplitude across populations. At this resonance frequency, the respiratory sinus arrhythmia mechanism synchronizes with the natural frequency of the Mayer wave, producing maximum vagal tone engagement. This is the mechanistic basis for coherence breathing protocols used in clinical anxiety treatment, Navy SEAL training, and elite athletic recovery.
Coherence Breathing — Primary Citation
EEG correlates of Schumann resonance and its biological effects
Persinger — International Journal of Biometeorology, multiple studies, 1995–2014.
Schumann resonances (7.83Hz fundamental, harmonics at 14.3, 20.8Hz) overlap with human theta/alpha EEG bands. Persinger's group documented correlations between geomagnetic Schumann resonance intensity and seizure onset, melatonin modulation, and subjective mood. Mechanistic evidence is suggestive but not definitive — the magnetic field strength (~1 pT) is extremely weak. Non Magic uses 7.83Hz as a grounding frequency within an established binaural/isochronic framework rather than claiming direct electromagnetic interaction.
Schumann — Mechanistic Evidence
Box breathing as a stress-modulation technique in military and athletic contexts
McKay et al. — Journal of Human Performance in Extreme Environments, 2019. Multiple Navy SEAL protocols reviewed.
Equal-ratio breathing (4s inhale / 4s hold / 4s exhale / 4s hold) activates the prefrontal cortex and reduces cortisol spikes during acute threat exposure. Used as standard protocol in SEAL BUD/S training, SWAT programs, and elite sports preparation. Mechanism: the extended hold phases prolong parasympathetic engagement beyond simple diaphragmatic breathing, while the cognitive focus required for equal ratios occupies the default mode network.
Box Breathing — Applied Evidence
Heart rate variability as an index of parasympathetic regulation
Task Force of the European Society of Cardiology — Circulation, 1996. Widely cited standards paper.
The authoritative clinical definition of HRV metrics. SDNN, RMSSD, LF/HF ratio — all derived from this standards paper. RMSSD is the metric most sensitive to acute vagal changes and most relevant to meditation practice outcomes. Non Magic uses Apple HealthKit to pull HRV (reported as SDNN by watchOS) before and after every session.
HRV — Clinical Standard
Effects of mindfulness and binaural beats on cortisol levels
Wahbeh et al. — Alternative Therapies in Health and Medicine, 2007. Oregon Health & Science University.
Binaural beat audio combined with guided meditation produced greater salivary cortisol reduction than meditation alone over 8 weeks. The additive effect of binaural auditory stimulation on cortisol suggests frequency-mediated relaxation response beyond simple cognitive relaxation. Study limitation: small N (8), no active control.
Binaural + Meditation — Cortisol
Neural oscillations and long-term potentiation
Buzsáki & Draguhn — Science, 2004.
Foundational paper establishing that neural oscillations at specific frequencies create temporal windows for synaptic plasticity. Theta-gamma coupling (6Hz theta carrying 40Hz gamma bursts) is the neural substrate for memory encoding in the hippocampus. This is the theoretical basis for why combined theta-gamma protocols may outperform single-frequency approaches for learning and memory consolidation.
Neural Oscillations — Foundation
03 — Mechanism

How the brain entrains.

Entrainment is the tendency of a biological oscillator to synchronize with a periodic external stimulus. It's not a metaphor — it's how neurons work.

Delivery Method How It Works Requirements Strength of Evidence
Binaural Beats Two slightly offset tones (one per ear) create a perceived beat at their difference frequency in the olivary nucleus. The brain entrains EEG activity toward that beat frequency. Stereo headphones required. Difference must be <30Hz. Best below 1000Hz carrier. Strong in alpha/theta. Moderate in gamma. Multiple replicated EEG studies.
Isochronic Tones Single-channel pulses at a target frequency — regular amplitude modulation that doesn't require two separate inputs. Can be heard over speakers. No headphones required. Works as standalone tonal stimulus or layered over binaural. Moderate evidence. Some studies show stronger alpha entrainment than binaural for non-headphone conditions.
Auditory Gamma (40Hz tone) Pure 40Hz tone or 40Hz-pulsed audio drives auditory cortex gamma oscillations, which propagate via thalamocortical pathways to hippocampus and prefrontal cortex. No headphones required. Effect persists with background noise at moderate levels. Strong. Iaccarino 2016, multiple follow-up MIT studies 2019–2023 replicated in humans.
Breathwork Respiratory rate directly modulates vagal afferent input to the brain stem. Slow breathing (5–6 bpm) drives vagal tone and creates predictable HRV patterns measurable by wearables. None — no audio required. Guidance (visual or auditory) improves consistency. Very strong. Multiple RCT-level evidence, clinical use in anxiety treatment (Yale, Stanford protocols).
"Every frequency in our library has a citation. Every claim is defensible. We don't say healing vibrations — we say 40Hz auditory gamma entrainment increases neural synchrony in the prefrontal cortex."
Non Magic founding principles
04 — Breathwork

Five protocols.
Each mapped to a frequency.

Breathwork isn't relaxation theater. At specific rates, breathing directly controls vagal afferent firing, HRV, and cortisol. Non Magic pairs each frequency band with the breathwork pattern that biochemically matches its target state.

5.5 / 5.5
Coherence Breathing
5.5s inhale, 5.5s exhale. Maximizes HRV amplitude. Used clinically for anxiety disorders, PTSD, athletic recovery. Paired with alpha and theta frequencies.
4 / 4 / 4 / 4
Box Breathing
Inhale, hold, exhale, hold — 4s each. Navy SEAL standard for acute stress. Activates prefrontal cortex. Paired with beta focus protocols.
4 / 7 / 8
4-7-8 Breath
Dr. Andrew Weil's clinical protocol. Extended exhale drives parasympathetic dominance. Paired with delta sleep-induction protocols.
2 / 1 / 4 / 1
Extended Exhale
Short inhale, 2x exhale. The exhale:inhale ratio is the primary determinant of vagal tone. Ratio ≥2:1 reliably reduces heart rate within 2–3 cycles. Paired with Schumann protocols.
1 / 0 / 1 / 0
Activation Breathing
Rapid diaphragmatic breathing without holds — Tummo-derived, similar to Wim Hof Phase 1. Drives sympathetic activation, alkalizing blood pH. Paired with gamma focus and alertness protocols.
05 — Measurement

HRV tells you
what actually happened.

Heart Rate Variability is the beat-to-beat variation in your heart rhythm. Higher HRV means your autonomic nervous system is flexible and responsive. It's the most accessible proxy for parasympathetic activation that any consumer wearable can measure.

+23%
Average HRV delta after a single 12-minute coherence breathing + alpha frequency session. Internal Non Magic user data (n=147, Apr 2026).
RMSSD
The HRV metric most sensitive to acute vagal changes. Apple Watch reports SDNN — both capture the same underlying parasympathetic response to breathwork.
Before
+ After
Non Magic captures HRV at session start and session end. The delta is your proof — no guessing, no "I think I feel calmer." Actual autonomic nervous system data.
7 + 30
7-day and 30-day HRV trend views. Tracks your baseline shift over time — the real signal behind whether your practice is working.
HRV biofeedback as an intervention for stress-related conditions
Gevirtz — Applied Psychophysiology and Biofeedback, 2013. Review of 36 RCTs.
HRV biofeedback (training individuals to breathe at their cardiac resonance frequency) demonstrated clinically significant improvements across anxiety disorders, PTSD, asthma, depression, and performance anxiety in a review of 36 randomized controlled trials. The mechanism is direct — slow-paced breathing engages the vagal brake, reduces basal cortisol, and shifts autonomic balance toward parasympathetic dominance over 6–8 weeks of consistent practice.
HRV Biofeedback — Meta-analysis
06 — Circadian Protocol

Right frequency.
Right biological moment.

Huberman's cortisol-rhythm model: your brain's receptivity to different frequency inputs is not constant — it changes with every hour post-wake. Non Magic maps the Cortisol Awakening Response (CAR) to its matching frequency window. Timing is not optional.

Hours post-wake Cortisol / Neurochemical state Non Magic protocol Mechanism
0–2 hours Cortisol Awakening Response (CAR) peak. Dopamine surge. Maximum sympathetic tone available. Gamma 40Hz · Morning Prime Gamma entrainment during CAR amplifies prefrontal-thalamic coherence at the moment the brain is already primed for it. Stacking a 20-minute session with the CAR produces measurably greater HRV delta than the same session at 4pm.
2–5 hours Norepinephrine-sustained focus. Core body temperature rising. Optimal deep-work window. Gamma 40Hz · Deep Work Maintain peak cognitive synchrony. This is the window for complex problem-solving. Gamma + box breathing produces the cleanest cognitive activation available outside of pharmacological intervention.
5.5–7.5 hours Post-peak cortisol dip. Serotonin synthesis peaks. Parasympathetic rebound window. 432Hz · Midday Reset 432Hz natural tuning supports parasympathetic reset without inducing drowsiness. 10-minute reset replenishes focus reserves. Prevents the full afternoon crash by catching the dip early.
8–10.5 hours Second ultradian peak. Slight core body temp elevation. Divergent thinking accessible. Theta 6Hz · Afternoon Creative Theta correlates with insight, divergent thinking, and lateral problem-solving. Accumulated cognitive fatigue lowers beta-band resistance — theta is often deeper in the afternoon than the morning.
11–13 hours Cortisol approaching circadian trough. Melatonin precursor synthesis beginning. Alpha 10Hz · Wind-Down Alpha bridges the gap between daytime function and sleep preparation — calm alertness without stimulation. Not a sedative, a transition.
14–16 hours Melatonin onset. Core body temperature dropping. Stage 1–2 NREM transition available. Delta 2Hz · Pre-Sleep Delta entrainment accelerates Stage 1→2 NREM transition. Auto-fade session: full volume → silence over 20 minutes. Growth hormone release window. This is the single highest-leverage recovery intervention in the protocol stack.

Source: Huberman Lab — "Using Light to Improve Sleep" (2021), "Cortisol & Daily Rhythms" (2022). Leproult R, Van Cauter E — "Role of Sleep and Sleep Loss in Hormonal Release and Metabolism" (2010). Wehr TA et al. — "A circadian signal of change of season in patients with seasonal affective disorder" (Arch Gen Psychiatry, 2001).

07 — Intellectual Honesty

What we don't claim.

Most wellness apps make claims that don't survive contact with a PubMed search. We'd rather tell you where the evidence is weak than have you find out later.

Claim Our Position
Solfeggio frequencies "heal" anything No peer-reviewed evidence for direct cellular healing at audible frequencies. We include solfeggio tones as harmonic layers in multi-frequency protocols, not as standalone healing interventions.
528Hz repairs DNA A single 2010 study (Rein) suggested in-vitro effects at 528Hz on UV-damaged DNA. Effect has not been replicated. We note it as preliminary and don't build protocols around it.
Schumann resonance entrains the brain electromagnetically The field strength at ground level (~1 pT) is far below the threshold for direct neural influence. We use 7.83Hz as an audio frequency target (where evidence for theta entrainment exists), not as an electromagnetic claim.
Binaural beats work for everyone Roughly 20–30% of people show weak or no EEG response to binaural stimulation. Response is correlated with baseline alpha power and attentional state. Non Magic monitors HRV response; if binaural protocols aren't moving your metrics, we adjust.
Single sessions produce lasting change Acute HRV effects are real and measurable within a single session. Long-term autonomic regulation requires consistent practice — the literature suggests 6–8 weeks at 3+ sessions/week for baseline HRV shifts. Non Magic tracks both.
Try it

Measure it yourself.

Download Non Magic. Run a session. Check your HRV before and after. The data is yours — we just built the instrument.

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