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.
Weve covered BCIs extensively here on ExtremeTech, but historically theyve 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. Browns 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 monkey and pig.
Browns wireless BCI, fashioned out of hermetically sealed titanium, looks a lot like a pacemaker. Inside theres 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 BCIs battery takes two hours to charge via wireless inductive charging, and then has enough juice to last for six hours of use.
One of the features that the Brown researchers seem most excited about is the devices 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 animals 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.
Better Identification of Viking Corpses Reveals: Half of the Warriors Were Female 2015-04-25 4:52
Shieldmaidens are not a myth! A recent archaeological discovery has shattered the stereotype of exclusively male Viking warriors sailing out to war while their long-suffering wives wait at home with baby Vikings. (We knew it! We always knew it.) Plus, some other findings are challenging that whole ârape and pillageâ thing, too.
Researchers at the University of Western Australia decided ...
Off Your Knees, Germany! Ernst Zundel 1983 - 2003 2015-04-25 1:15
For more information on the holocaust, how the war was forced upon Germany, and the REAL victims of the second world war see:
IRS Drops Attack For Six Years â No Evidence of Jurisdiction 2015-04-24 20:29
A big congrats to a friend Iâve been working with for several years, he stood up to the predators commonly called the âIRSâ and they dropped their attack. Thanks also for providing me with the proof below.
The criminals called the âIRSâ initiated an attack claiming my friend was required to file six tax returns, or explain how he made ...
Into Eternity - Finland's 100,000 Year Massive Underground Spent Nuclear Fuel Program 2015-04-24 20:49
Into Eternity is a documentary about a deep geological repository for nuclear waste. The concept of long-term underground storage for radioactive waste has been explored since the 1950s. The inner part of the Russian doll-like storage canisters is to be composed of copper. Hence in the case of Onkalo it is tightly linked to experiments on copper corrosion in running ...
SPLC Accuses Oath Keepers of Inciting âArmed Confrontationâ Over Sugar Pine Mine 2015-04-24 20:22
The Southern Poverty Law Center has accused Oath Keepers of inciting an armed confrontation with BLM authorities over the Sugar Pine Mine dispute in Oregon, despite the fact that the organization has explicitly stated that it is not promoting armed confrontation with the feds.
In an article provocatively posted on the organizationâs âHatewatchâ section entitled Oath Keepers Descend Upon Oregon with ...