UCSF research achieves 78-wpm speech decoding from cortical surface electrodes with 25% error rate

Echo Neurotechnologies/Speech BCI (Cortical Surface, Avatar Speech)

A landmark UCSF study published in Nature demonstrated speech decoding from cortical surface electrodes: 78 words per minute text output with 25% median word error rate, plus synthesized speech audio and avatar animation. High performance was reached with less than two weeks of training, establishing the feasibility of cortical surface implants for speech restoration.