Scientists have created a flexible brain implant, as thin as a needle, that can record signals, deliver drugs, and stimulate multiple brain regions simultaneously. This new brain implant, also as thin as a needle, can record neural activity, deliver medication, and stimulate multiple brain areas using a single, flexible fiber. Successful experiments on mice suggest that this method could provide scientists with a more precise and less invasive way to study the brain, and ultimately may help treat neurological disorders such as epilepsy.

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