Vitrified brain tissue resumes activity

A PNAS report shows that mouse brain slices flash‑frozen by vitrification can be thawed and still exhibit spontaneous neural dynamics and preserved neuronal function. The experiment stopped short of restoring a whole brain or consciousness, but it demonstrates recovery of cellular and network properties after molecular motion arrest. — If scalable, this technique narrows the technical gap between basic organ/tissue banking and claims made by cryonics proponents, raising questions about regulation, consent, organ supply, and the ethics of preserving human brains for future revival.