# Levitating magnetic sensor could detect faintest brain signals

Researchers have developed a levitating sensor capable of detecting extremely weak magnetic fields, potentially including ultrafaint brain activity. The innovation could enable new non-invasive methods for studying brain function and diagnosing neurological conditions.

**Importance:** 3/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/d41586-026-02458-9) — 2026-08-06