A Face ID pioneer raised $52M to read the brain like a blood test

Hemispheric, founded by a Face ID co-creator, raised $52M to develop Descartes, a 6-billion-parameter AI model analyzing brain activity via a 15-minute EEG test to diagnose conditions like depression and Alzheimer's. The startup aims to make brain tests as routine as blood draws, contrasting with invasive approaches like Neuralink's implants. Hemispheric plans US and European launches after FDA review, entering a growing AI healthcare market.