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 monkey and pig.
Brown’s wireless BCI, fashioned out of hermetically sealed titanium, looks a lot like a pacemaker. 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.
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.
German Schoolchildren will Cook and Clean for â€śRefugeesâ€ť as Part of Work Experience 2015-10-13 0:44
Schoolchildren from an undisclosed school in the city of LĂĽbeck, Schleswig-Holstein, will spend a week doing housework for so-called â€śrefugeesâ€ť.
The idea was sold to parents at a parentsâ€™ meeting as a â€śpractical internshipâ€ś, but has sparked outrage online.
A letter to the parents said their children will be going to â€śrefugeeâ€ť accommodations and will be making beds, sorting clothes, and ...
MTV: Saying "No Can Do" Or "Long Time No See" Is Racist 2015-10-12 23:04 Harmless terms have offensive origins, asserts Franchesca Ramsey
According to MTV News, using the phrases “long time no see,” “peanut gallery” and “no can do” is offensive because the terms have “racist beginnings.”
Host Franchesca Ramsey begins by claiming that the term “peanut gallery” is offensive because it was once the place where black people were “forced” to sit at the theater ...
Migrants Dump Garbage from Their Balconies at German Asylum Center 2015-10-12 23:35
German authorities expect up to 1.5 million asylum seekers to arrive in Germany this year – up from 750,000 last month.
So they can expect more of this–
Migrants Dump Garbage from their Balconies : Augsburg Asylum Center, Germany
In a recent poll, the number of “frightened” Germans jumped from 38% to 51% in three weeks.
Muslim Statistics reported, via Religion of Peace:
The latest ...
US Paradrops 50 Tons Of Ammo To Syrian Rebels 2015-10-12 22:32
As we noted over the weekend, the US has now thrown in the towel on the ill-fated (and that’s putting it lightly) strategy of training Syrian fighters and sending them into battle only to be captured and killed by other Syrian fighters who the US also trained.
The Pentagon’s effort to recruit 5,400 properly “vetted” anti-ISIS rebels by the end of ...
Migrant Crisis stand-up routine - Sam Hyde 2015-10-10 18:07
YouTube description: "Migrant" "Crisis" AKA Muslim Road Trip. Hundreds of thousands of astronauts, doctors, sciencemen, and peaceful clock inventors descend upon the countries with the most collective guilt and free stuff.
This was pretty good man... I wasn't expecting this reaction from the same Boston college audience who so thoroughly disapproved of my 'Mike Brown' routine. I think the invasion of ...