Precision Neuroscience’s brain-computer interface sits on top of the brain, not in it. That could make it easier to implant, and less likely to damage tissue. 📷: Courtesy of Precision Neuroscience
Because it penetrates the tissue, the Utah array can cause inflammation and scarring around the implantation site, which leads to a decline in signal quality over time. And signal quality is important because it affects how well the BCI performs. No one actually knows how long Utah arrays can last in the brain; so far the record isPlacing a Utah array also requires surgeons to perform a craniotomy, making a small hole in the skull.
Craig Mermel, the company’s president and chief product officer, says the Precision array could be taken out as easily, too. As BCI technology improves, patients who get early brain chips may eventually want to upgrade to new ones. With Utah arrays, new devices usually can’t be placed in the same area due to scar tissue.
Peter Brunner, an associate professor of neurosurgery and biomedical engineering at Washington University in St. Louis, says Precision’s implant seems impressive, but there are still unknowns about how long it will last once implanted. Any device implanted in the body tends to degrade over time. “There’s a tension between making things smaller and at the same time maintaining the robustness against the environment that these devices face in the human body,” he says.
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