Researchers have developed a brain implant as thin as a needle that combines three functions in a single flexible fiber. In tests with mice, the device was able to record neural activity, deliver drugs, and stimulate multiple brain regions at the same time.
The design is notable because it packs multiple capabilities into one small, flexible probe. That could make experiments less invasive and give scientists a more precise way to observe and manipulate brain activity, the findings suggest.
The successful mouse tests indicate the implant may eventually help in brain research and, potentially, in clinical applications. For now, the work is at an early stage, and further studies would be needed to assess safety and effectiveness.