They’ve published a whitepaper including pictures of the implanted electrodes on a rat’s brain: https://www.documentcloud.org/documents/6204648-Neuralink-White-

They’ve published a whitepaper including pictures of the implanted electrodes on a rat’s brain: https://www.documentcloud.org/documents/6204648-Neuralink-White-Paper.html https://www.documentcloud.org/documents/6204648-Neuralink-Wh... Summary: 3k+ electrodes in the test device, each thread is 1/10 of a human hair, they connect directly to custom chips that are bundled in a 4x4mm package. The test one has a USB-C port but in humans it would be implanted under the skin - a single 2mm incision with minimal bleeding - and communicate wirelessly. Looks like their main technology is the surgery robot and the custom chips. This is truly out of science fiction and will be an incredible revolution if it works.