# Muse has trained an AI model on users’ brain-wave data

> Interaxon says it trained a model on about 50,000 hours of EEG recordings from its Muse headband. A Science investigation found privacy policies initially did not clearly explain this use.

Oossa · 2026-11-09 · https://oossa.com/en/muse-has-trained-an-ai-model-on-users-brain-wave-data

Interaxon, the Canadian company behind the Muse sleep and meditation headband, has used about 50,000 hours of customers’ brain-wave recordings to train an AI model, it says. The recordings are collected as the device monitors brain activity and other body signals during sleep.

A Science investigation with the Pulitzer Center’s AI Accountability Network found that several companies in the field have gathered tens of millions of hours of EEG data to develop AI models, with policies initially failing to spell out that use. Interaxon says it removes identifying details such as names, email addresses and street addresses before using recordings.

## The facts

- Interaxon says it trained its model on about 50,000 hours of EEG recordings.
- The investigation found the companies had accumulated tens of millions of hours of EEG data.

## Why it matters

Muse customers’ sleep recordings may be used to train AI as well as generate personal sleep reports, so people deciding whether to use the headband should check its current data policy; the supplied details do not say how users can opt out.

## Sources & references

1. [Wearable sleep trackers are using your brainwaves to train AI models without explicit user consent](https://www.tomshardware.com/peripherals/wearable-tech/wearable-sleep-trackers-are-using-your-brainwaves-to-train-ai-models-without-explicit-user-consent-tens-of-millions-of-hours-of-eeg-data-harvested) – Tom's Hardware, 2026-11-09

Last updated: 2026-11-09