alt Hacker NewsAlso check out their other post: https://brainhack.vercel.app/ae
They are planning to locally change the electrical conductivity of brain tissue by focused ultrasound, modulate that with at few hundred kHz and do a lock-in (EEG) measurement to deduce electrical activity at that spot on the scale of 1mm. Pretty wild if that actually works.
Fascinating — I thought ultrasound was already regularly in use for reading oxygenation levels, I had no idea it was new!! I’ve gotta try this. I don’t love the modulation side, but the measurement side is incredible. Invasive tech is unnecessary and terrifying IMHO