The brain chip that still works four years in

CorTec announced October 21 peer-reviewed data, published in the Proceedings of the 10th Graz BCI Conference, showing its cortical-surface electrodes recorded stably in two macaques for more than four years. In the animal still under study, 63 of 64 contacts still deliver meaningful signals at day 1,361 — "the same brain signatures on day 176 and more than three and a half years later," per first author Dr. C. A. Gkogkidis. The arrays rest on the brain's protective membrane and never penetrate tissue.

The same platform powers Brain Interchange, now in FDA-authorized studies at the University of Washington and Mayo Clinic with two Breakthrough Device Designations. The release is explicit that these are preclinical primate results, not human data — the implant problem is becoming a longevity problem, not an insertion one.