Rice University Advances Wireless Neural Implants
Engineers at Rice University, with funding from a UK agency, have made advances in wireless neural implants. The technology is aimed at next-generation brain research and could influence the future of assistive technologies and accessibility requirements in education.
The research is part of the U.S. Defense Advanced Research Projects Agency's (DARPA) Next-Generation Nonsurgical Neurotechnology (N3) program. Rice University was awarded $9.8 million to develop these minimally invasive neural interfaces, which aim to connect the human brain with computers for hands-free interaction with military systems. At the heart of the technology is a tiny, rice-grain-sized implant that operates without a battery. Led by neuroengineers like Jacob Robinson, the team developed a system using "magnetoelectric" materials that convert magnetic energy from an external transmitter directly into electrical voltage to stimulate neurons. This method of powering the implants avoids issues seen with other wireless techniques, such as harmful heat generation or signal interference with living tissue. The goal is to create devices small enough to be implanted almost anywhere in the body through minimally invasive procedures. One version of the device, the pea-sized Digitally programmable Over-brain Therapeutic (DOT), is the smallest implantable brain stimulator ever demonstrated in a human patient. In one instance, the device successfully activated a patient's motor cortex, causing them to move their hand. Beyond military applications like controlling drones or cyber-defense systems, the technology has significant clinical potential. Researchers envision it treating conditions like drug-resistant depression, epilepsy, Parkinson's disease, and chronic pain.
