ProjectTBI.org Advocacy Whitepaper Series · Paper 2 of 2

Companion piece · Binaural Beats & the Fluctuating Energy Economy

Two tones. One brain.
A sound that isn't there.

This is what a binaural beat actually sounds like — not a metaphor, the real thing. Put on headphones, press play, and hear your own brain build a third sound out of two that don't exist together anywhere in the air.

Try it yourself

Headphones required — speakers send the same sound to both ears and won't create the effect.

10 Hz beat your brain is building right now ALPHA range

This is a real audio demo — the two tones actually play, one per ear. It is illustrative, not a treatment session. If you have a seizure disorder or a history of seizures since your injury, talk to your neurologist before trying rhythmic sound tools of any kind.

00 · What's actually happening

Neither ear ever hears the beat

Here's the part that surprises people: each ear only ever receives one steady tone. There is no 10 Hz anywhere in the air, and there never was. Your left ear's signal and your right ear's signal travel up, separately, to a spot in your brainstem called the superior olivary complex* — one of the first places where signals from both ears meet.3 Neurons there are wired to compare timing between your two ears. Because the two tones drift in and out of sync at a steady rate — exactly equal to the difference between them2 — that comparison produces a rhythm of its own. That rhythm is the beat you hear. Nothing is filtered out of the incoming sound. Something is built, downstream, out of a disagreement your brain notices between two ears that are each hearing something slightly different.

Left ear — one steady tone, alone Right ear — one steady tone, alone, slightly faster The brainstem's comparison — this is the beat you perceive

Slowed and simplified so it's visible to the eye — the real comparison in your brainstem happens far faster than this, and the summing shown in the third row is a stand-in for a neural comparison, not something that happens acoustically in the air.

01 · Pick a speed

Different beats, different states

Researchers group binaural beats into three rough speeds. None of this is fully settled science — but here's what each range is linked to, and what it's used for. Tap a card to hear it in the demo above.

02 · The bigger picture

The Fluctuating Energy Economy

Tinnitus isn't just a sound — it's a line item. Every night spent fighting it draws down a reserve that doesn't refill on a fixed schedule. Every night spent coexisting with it is closer to a deposit. Flip the switch below to see the shift.

Fighting it
Coexisting with it

Withdrawals

Trying to out-will the ring
Lying awake, attention locked on the sound
Nervous system stuck scanning, bracing
Sympathetic mode — never powering down

Deposits

Coexisting with the sound instead of fighting it
Attention redirected — not silenced, deprioritized
Shift toward parasympathetic "rest and restore"
Better sleep, more next-day cognitive reserve
Binaural beats don't erase the sound. They're one low-risk tool that may help move nights from the left column toward the right.

03 · What the research actually shows

The evidence at a glance

Small studies. Honest limits. Tap any study to read what it actually found — no study here claims a cure.

Preliminary / mixed Promising, small sample Consistent across multiple controlled studies

04 · Before you try it

A practical checklist

Not a protocol — just the honest basics. Check items off as you go; your progress is saved on this device.

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