Columbia's BISC implant puts 65,536 electrodes on a single paper-thin chip
The wireless brain interface, described in Nature Electronics, streams data at 100 Mbps and is entering short intraoperative human studies.
Researchers at Columbia University, with Stanford, the University of Pennsylvania and NewYork-Presbyterian, have described BISC (Biological Interface System to Cortex) in Nature Electronics. The whole implant is one silicon chip just 50 micrometers thick, with 65,536 electrodes, 1,024 recording channels and 16,384 stimulation channels. It slides onto the brain’s surface through a small opening and transmits data wirelessly at 100 megabits per second.
After animal studies in motor and visual cortex, short intraoperative tests in people are under way. Packing an entire BCI onto standard chips could make high-channel implants far smaller and cheaper.
Learn more: Channel count · ECoG