The physics
The microcurrent signal, and why it is imperceptible
The microcurrent signal used in a session is a brief pulse of electrical current measured in millionths of an ampere, delivered through scalp sensors for a fraction of a second at a time.
Its size is the whole reason people rarely feel it. Sensation at the skin generally needs far more current than this, sustained for far longer.
How strong is the microcurrent signal?
It is measured in microamperes, which are millionths of an ampere. For scale, a small household nightlight draws current in the tens of thousands of microamperes, continuously.
Comparisons like that are useful for scale and nothing more. Current in the body depends on the path it takes as much as the number on the meter, which is why contact quality is checked before anything runs.
- The unit is the microampere, written as one millionth of an ampere.
- The pulse runs in fractions of a second, not minutes.
- The path is sensor to sensor at the scalp surface.
Why can I not feel the signal?
Skin has a sensory threshold. Below a certain combination of current and duration, nerve endings do not register anything, and a microcurrent pulse sits well under that line.
A few people do report a faint tingle or a warm spot at a sensor site. That is usually about contact at the skin rather than the signal getting stronger.
Is the current safe?
The equipment we use holds FDA clearance as a biofeedback device indicated for relaxation training and muscle reeducation, and it is operated inside the limits of that clearance.
Safe in this sense means the current is very small and the device is regulated for the use we put it to. It does not mean the practice has been shown to do anything in particular. Those are two different claims and we keep them apart.
Why is the signal so short?
Because the approach is built around brief exchanges rather than sustained input. The reading, the pulse, and the pause repeat in a small cycle.
Longer is not read as stronger here. Practitioners generally do less at the start of a series, not more.
How might I feel in the hours after a session?
Descriptions vary widely. Calm, sleepy, clear headed, and completely unchanged are all things people say to us on the way out the door.
We do not choose one of those and put it on a poster. Our page on the hours after a session lays out the range, including the less pleasant end of it.
Questions people ask about this
Please read this
Momentous Neurofeedback is a wellness practice. We use an FDA-cleared biofeedback device indicated for relaxation training and muscle reeducation.
We do not provide medical care and we do not assess or identify health conditions. We make no promise about any outcome, and nothing on this site should be read as one.
Sessions are not a substitute for care from a licensed clinician. If you have a health concern, speak with your own provider. In an emergency, call your local emergency number.
Small signal, quiet hour
If the physics is the part that worried you, ask about it in person. We will show you the equipment before anything is switched on.