Researchers in Denmark and the United Kingdom have built a flexible brain implant less than half a millimeter across that can record electrical signals, stimulate neurons with light, and deliver fluids at multiple depths through a single fiber. In tests in living mice, the device worked in both shallow and deep brain regions, according to a study published in Advanced Science and announced by the Technical University of Denmark on Sept. 21.
The device, called the microfluidic Axialtrode, or mAxialtrode, is a research tool. It has not been tested in people, and its developers say it is still far from clinical use.
