Neuralink deemed the risk low enough for a redesign not to be merited, the sources added. Neuralink is testing its implant to give paralyzed patients the ability to use digital devices by thinking alone, a prospect that could help people with spinal cord injuries. The company said last week that the implant's tiny wires, which are thinner than a human hair, retracted from a patient's brain in its first human trial, resulting in fewer electrodes that could measure brain signals. The company said it managed to restore the implant's ability to monitor its patient's brain signals by making changes that included modifying its algorithm to be more sensitive. In the weeks after the surgery, "a number of threads retracted from the brain," Neuralink said in a blog update last week.

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Persons: Neuralink, Noland Arbaugh, Arbaugh, Robert Gaunt, it's Organizations: Elon Musk, U.S . Food, Drug Administration, FDA, Specialists, University of Pittsburgh Locations: U.S, Neuralink