This Brain-Computer Interface Is So Small It Fits Between the Follicles of Your Hair

Published on April 10, 2025

Brain-computer interfaces are typically unwieldy, which makes using them on the move a non-starter. A new neural interface small enough to be attached between the user’s hair follicles keeps working even when the user is in motion.

At present, brain-computer interfaces are typically used as research devices designed to study neural activity or, occasionally, as a way for patients with severe paralysis to control wheelchairs or computers. But there are hopes they could one day become a fast and intuitive way for people to interact with personal devices through thoughts alone. 

Invasive approaches that implant electrodes deep in the brain provide the highest fidelity connections, but regulators are unlikely to approve them for all but the most pressing medical problems in the near term.

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