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Brown University creates first wireless, implanted brain-computer interface

Wireless BCI inventors, Arto Nurmikko and Ming Yin, look thoroughly amazed by their deviceExtreme Tech

Researchers at Brown University have succeeded in creating the first wireless, implantable, rechargeable, long-term brain-computer interface. The wireless BCIs have been implanted in pigs and monkeys for over 13 months without issue, and human subjects are next. 

We’ve covered BCIs extensively here on ExtremeTech, but historically they’ve been bulky and tethered to a computer. A tether limits the mobility of the patient, and also the real-world testing that can be performed by the researchers. Brown’s wireless BCI allows the subject to move freely, dramatically increasing the quantity and quality of data that can be gathered — instead of watching what happens when a monkey moves its arm, scientists can now analyze its brain activity during complex activity, such as foraging or social interaction. Obviously, once the wireless implant is approved for human testing, being able to move freely — rather than strapped to a chair in the lab — would be rather empowering.

Wireless BCI, installed in a monkey and a pig
Brown’s wireless BCI, fashioned out of hermetically sealed titanium, looks a lot like a pacemaker. (See: Brain pacemaker helps treat Alzheimer’s disease.) Inside there’s a li-ion battery, an inductive (wireless) charging loop, a chip that digitizes the signals from your brain, and an antenna for transmitting those neural spikes to a nearby computer. The BCI is connected to a small chip with 100 electrodes protruding from it, which, in this study, was embedded in the somatosensory cortex or motor cortex. These 100 electrodes produce a lot of data, which the BCI transmits at 24Mbps over the 3.2 and 3.8GHz bands to a receiver that is one meter away. The BCI’s battery takes two hours to charge via wireless inductive charging, and then has enough juice to last for six hours of use.

Brown's wireless BCI, exploded view

One of the features that the Brown researchers seem most excited about is the device’s power consumption, which is just 100 milliwatts. For a device that might eventually find its way into humans, frugal power consumption is a key factor that will enable all-day, highly mobile usage. Amusingly, though, the research paper notes that the wireless charging does cause significant warming of the device, which was “mitigated by liquid cooling the area with chilled water during the recharge process and did not notably affect the animal’s comfort.” Another important factor is that the researchers were able to extract high-quality, “rich” neural signals from the wireless implant — a good indicator that it will also help human neuroscience, if and when the device is approved.

Moving forward, the wireless BCI is very much a part of BrainGate — the Brown University research group that’s tasked with bringing these neurological technologies to humans. So far, the pinnacle of BrainGate’s work is a robotic arm controlled by a tethered BCI, which paralyzed patients can use to feed themselves (video embedded below). While the wireless BCI isn’t approve for human use (and there’s no indication that they’re seeking approval yet), it was designed specifically so that it should be safe for human use.

The Brown researchers now intend to develop a different version of the device to help them study the motor cortex of an animal with Parkinson’s disease. They are also working on reducing the device’s size, improving its safety and reliability, and increasing the amount of data it can transmit — for the eventual goal of equipping those with movement disabilities, or elective transhumanists, with a wireless brain-computer interface.

http://www.extremetech.com/extreme/149879-brown-university-creates-first-wireless-implanted-brain-computer-interface

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4 Responses to Brown University creates first wireless, implanted brain-computer interface

  1. David Kidd says:

    I would never let that device near me ever….electromagnetic energy is radiation.

  2. Mark Schumacher - NV says:

    Gee Whiz –

    Do ya think that maybe we are going to start seeing more false flag events now? Christ talk about showing your poker hand. Just throw one of these babies inside some poor slobs brain and bingo, mass murder and mayhem. Maybe this is what is inside Chuckie Schumer and John McCains heads.

    Maybe the test monkeys were doing all of these school shootings? LOL….

  3. NC says:

    Oh I bet the military and shadow government is just drooling over this project now. I’m sure they see an infinite number of possibilities to control the human population. I bet you can expect it to be shut down and taken over by the government in the near future, if it has not already been done so. Mark of the beast anyone?

  4. Bullwinkle says:

    Hats will come back into fashion to hide the chips.

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