Complex neurotechnological devices are required to directly select and influence brain waves inside the skull’s interior. Although it has become relatively easy to implement the devices, researchers are still faced with challenges when trying to keep them running properly in living organisms over time. But that could be changing now, thanks to a new method. A research team was able to create a microprobe that grows into the neural tissue without inflammation and with the help of a medicinal coating. Even after twelve weeks it is still able to deliver strong signals.