The science · audio-visual stimulation.
One exacting instrument.
Grounded in decades of neuroscience research.Your brain has a rhythm. We work with it.
Your brain continuously produces patterns of electrical activity: brain waves. They vary depending on whether you are alert, relaxed, drowsy or asleep. Rhythmic light and sound, delivered at a steady frequency, can guide brain activity toward similar ranges, a process called neural entrainment, grounded in decades of research across sleep, stress, focus and recovery.
Audio-visual stimulation (AVS)
Rhythmic light through the mask as a gentle flicker, with matched binaural or isochronic tones through the headphones. Delivered together, light and sound are engineered to produce a larger response than either alone.
Neural entrainment
The brain’s tendency to synchronize its electrical rhythms to an external one, the way you end up nodding along to a beat without deciding to. The effect is measurable on EEG (Notbohm and Herrmann, Journal of Neuroscience, 2016).
SSVEP
Steady-state visually evoked potentials: EEG-measurable evidence that the brain is responding to the stimulus itself. Alpha-band entrainment at 10 Hz is well documented in the published literature (Rahmani, Romero Lauro and Pisoni, Brain Sciences, 2025).
02 / The bands · five frequency ranges.
Each protocol is matched to a moment in the day. The light is cooler by day and warmer at night.
| Band | Frequency | Often associated with |
|---|---|---|
| Gamma | 30+ Hz | Heightened attention, higher-order processing |
| Beta | 12–30 Hz | Alertness, active concentration |
| Alpha | 8–12 Hz | Relaxed wakefulness |
| Theta | 4–8 Hz | Drowsiness, memory processing, sleep onset |
| Delta | 0.5–4 Hz | Prominent during deep, slow-wave sleep |
03 / The instrument · light, tuned like an instrument.
Rhythmic light through the mask. Matched tones through the headphones.04 / Our data · reported as signals, not proof.
From our in-lab study in Beijing, February 2026. A single daytime session, in a room not set up for sleeping. Self-report from 93 participants, physiological measures from 71.
| Signal | What we observed |
|---|---|
| Anxiety | Self-reported anxiety fell after a single session and stayed lower to the end of it. Effect size dz −0.51, n=93. |
| Relaxation | Self-reported relaxation rose across the session. dz 0.58, n=93. |
| Heart-rate variability | RMSSD rose during the session against both a resting and an engaged baseline, dz 0.64 to 0.66. Heart rate fell, dz −0.54 to −0.77. n=71. |
| Brain activity | A summary score from EEG showed reduced vigilance during the session, measured against an eyes-closed resting baseline so that eye closure alone does not explain it. dz −0.67. Theta activity rose 23.7% against the same baseline. n=71. |
| Reversibility | Measures returned toward baseline after the session ended. |
Effect size (dz): 0.2 is small, 0.5 moderate, 0.8 large. Early signals from one in-lab study, not proof of efficacy.
Read the Claims Ledger05 / Standards · good science. No shortcuts.
Safety first. Always.
All stimulus parameters are designed to fall within established photic safety limits. We don’t push beyond what the evidence supports.
Claims follow data.
We report what we find, not what we hope to find. In-lab data is reported as in-lab data. We stay one step behind the evidence, on purpose.
Open research.
We’re committed to publishing our findings and contributing to the wider understanding of AVS-based neuromodulation.
06 / Research collaboration · the door is open.
Domayn runs its own studies in the lab, and we work with independent researchers who put the mechanism through its paces on their own terms. We want more of that, not less. If you study sleep, attention, or the nervous system and see a question worth asking together, write to us.
Contact us
07 / Questions · the science, asked directly.
The science is the ground. The Mask is the instrument built on it. See it in full, or put your name down and we’ll tell you the moment access opens in your city.
