【解放日报】脑机接口长期稳定植入

Core Insights - A significant breakthrough in brain-computer interface (BCI) technology has been achieved with the development of a universal implantable flexible BCI system by BrainTiger Technology, enabling long-term stable implantation and precise control of over 20 digital/physical devices [1][2] - The research, conducted by the Shanghai Institute of Microsystem and Information Technology, BrainTiger Technology, and Huashan Hospital affiliated with Fudan University, represents the first long-term clinical trial article based on high-throughput, high-resolution flexible BCIs [1] Technical Innovations - The research team utilized semiconductor micro-nano processing technology to create an ultra-flexible 256-channel electrode array with a density of 64 channels per square centimeter, enhancing traditional electrode performance by 64 times [1] - The ultra-thin mesh recording area closely adheres to the brain cortex, ensuring high-fidelity signal acquisition, while the thickened lead area guarantees mechanical stability for long-term implantation [1] - The system features a customized titanium alloy waterproof shell and low-power processing unit, achieving breakthroughs in high throughput, high resolution, and low invasiveness [1] Performance Metrics - In clinical trials, subjects completed a total of 25,412 training tasks, achieving a maximum bit rate of 4.15 bits per second, comparable to the performance levels of subjects from Elon Musk's Neuralink [2] - The electrode array is placed subdurally, adhering to the surface of the brain cortex without penetrating brain tissue, significantly reducing implantation risks while maintaining performance on par with Neuralink [2]