Elon Musk explains how Neuralink lets ALS patients who are tetraplegic communicate at similar bandwidth to a human with a fully functioning body (June 2025) “What Neuralink can effectively do is solve the input output bandwidth constraints. Especially our output bandwidth is very low. The sustained output of a human over the course of a day is less than one bit per second. So there, you know, 86,400 seconds in a day, and it’s extremely rare for a human to output more than that number of symbols per day, certainly for several days in a row.” “So with a Neuralink interface you can massively increase your output bandwidth and your input bandwidth. Input being write, you have to do write operations to the brain.” “We have now five humans who have received the kind of the read input where it’s reading signals. And you’ve got people with ALS who really have no, they’re tetraplegics, but they can now communicate at similar bandwidth to a human with a fully functioning body and control their computer and phone, which is pretty cool.” “And then I think in the next 6 to 12 months we’ll be doing our first implants for vision, where even if somebody’s completely blind, we can write directly to the visual cortex.”