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Neuralink faced a significant challenge with its first human trial participant, Noland Arbaugh, which affected the amount of brain data it could collect. The company revealed in a recent blog post that some of the threads from the implant placed in Arbaugh's brain had come loose, leading to data loss. Although the exact reason for the thread retraction was not disclosed, Neuralink assured that Arbaugh's safety was not compromised.
One potential factor investigated by Neuralink was the presence of air trapped in Arbaugh's skull after the surgery, known as pneumocephalus. Despite this setback, Neuralink managed to conduct a successful live demonstration with Arbaugh playing chess using only his thoughts, showcasing the potential of the technology.
Neuralink has since made adjustments to its algorithms to improve the performance of the implant. Even with the reduced capabilities, Arbaugh was able to livestream himself navigating his computer screen and playing games using the implant.
While the issue with Arbaugh's implant was a setback, Neuralink remains optimistic about the future of the technology. The company plans to implant its device in two more patients after completing a safety review of Arbaugh's case.
Neuralink has also informed the Food and Drug Administration (FDA) about the problem and believes it has solutions in place. The company hopes to continue advancing its brain-computer interface technology to help individuals with spinal cord injuries regain functionality.
The N1 implant developed by Neuralink is a compact device that includes a processing chip, battery, and communication components. It consists of 64 threads, each thinner than a human hair, with 16 electrodes per thread. These electrodes read and transmit neural signals from the brain's motor cortex, allowing users to control devices with their thoughts.
Despite the challenges faced during Arbaugh's trial, Neuralink has achieved a return to peak performance in terms of bits-per-second data transmission, showing promise for future developments in the field.