The Neuralink device has been implanted in one (1) person, Noland Arbaugh, so far. It’s not going well.
An estimated 85-percent of Neuralink’s brain-computer interface (BCI) implant threads connected to the first human patient’s motor cortex are now completely detached and his brain has shifted inside his skull up to three times what the company expected, volunteer Noland Arbaugh told The Wall Street Journal on Monday. Arbaugh also stated Neuralink has since remedied the initial performance issues using an over-the-air software update and is performing better than before, but the latest details continue to highlight concerns surrounding the company’s controversial, repeatedly delayed human implant study.
Neuralink’s coin-sized N1 BCI implant’s 64 wires thinner than a human hair are inserted a few millimeters into the motor cortex. Each thread contains 16 electrodes that translate a user’s neural activity into computer commands like typing and cursor movement. Around 870 of the 1024 electrodes in Arbaugh’s implant are no longer functional—an issue that allegedly took Neuralink a “few weeks” to remedy, reports The WSJ. When Arbaugh asked if his implant could be removed, fixed, or even replaced, Neuralink’s medical team relayed they would prefer to avoid another brain surgery and instead gather more information.
That device was inserted in January. In less than 6 months, it has decayed to 15% functionality, and the surgical team is reluctant to repair connectivity. That’s understandable; if the implant has basically torn out of place and built up scar tissue, there’s no point to sticking a second batch of wires into the same damaged spot, and relocating it to a new location is just going to tear up a different patch of Arbaugh’s brain.
The perils of being the first: you get to experience all the unforeseen problems, and also render yourself unsuitable for the Mark II device.
Oh well, too bad. Moving on, Neuralink is asking to stick wires in the brain of a second volunteer/guinea pig/sucker. There is no shortage of quadraplegics lined up for a miracle, and I can’t blame them.
The U.S. health regulator has allowed billionaire Elon Musk’s Neuralink to implant its brain chip in a second person after it proposed to fix a problem that occurred in its first patient, the Wall Street Journal reported on Monday.
Earlier this month, Neuralink said tiny wires implanted in the brain of its first patient had pulled out of position. Reuters reported last week, citing sources, the company knew from animal testing that the wires might retract.
The company intends to fix the problem by embedding some of the device’s wires deeper into the brain, the WSJ report said citing a person familiar with the company and a document it had viewed.
That last line is terrifying. Drill deeper! Get those wires in there, lock ’em in place, so if they do shift, they’ll rip up even more cortex! We better hope the second subject doesn’t know anything about the fate of the first.
This isn’t their only approach, though. They’re also thinking of patching the software. One of their goals is that Neuralink should be a discreet implant — I recall doing chronic implants in cats, where we’d get just one electrode in place, and lock it down with steel screws in the skull and great lumps of pink dental acrylic holding it down — which is obviously unsuitable for a human. So they have to make a small, low-profile device that operates on tiny voltages, and that also transmits and receives data to a larger, more capable computer. That’s a big constraint. Neuralink has put out a call for better algorithms, ones capable of a 200:1 lossless data compression with minimal computing power.
Turning brain signals into computer inputs means transmitting a lot of data very quickly. A problem for Neuralink is that the implant generates about 200 times more brain data per second than it can currently wirelessly transmit. Now, the company is seeking a new algorithm that can transmit this data in a smaller package — a process called compression — through a public challenge.
As a barebones web page announcing the Neuralink Compression Challenge posted on Thursday explains, “[greater than] 200x compression is needed.” The winning solution must also run in real time, and at low power.
Crucially, it specifies that the compression must be “lossless.” A “lossy” compression would be like a low-quality MP3 file, compared to pristine vinyl.
I know smart people are reading this blog. How about it? Get to work and write a revolutionary lossless compression algorithm that is capable of 200:1 reduction. I’m not a computer programmer anymore, so I’ll have to pass on the challenge, but I’m sure someone out there can do it…especially for such a great reward!
The reward for developing this miraculous leap forward in technology? A job interview, according to Neuralink employee Bliss Chapman. There is no mention of monetary compensation on the web page.
Although, to be fair, if you can write an efficient, fast 200:1 lossless compression algorithm, you can probably find better employment prospects than an Elon Musk company.
Also, there might be other reasons that Neuralink has invented what looks to be a hopeless task. They actually want the effort to fail.
Observers on social media immediately branded the task “impossible,” even speculating that Neuralink staff launched the challenge as a way of convincing the infamously incalcitrant Musk that it couldn’t be done.