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.
Weíve covered BCIs extensively here on ExtremeTech, but historically theyíve 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. Brownís wireless BCI allows the subject to move freely, dramatically increasing the quantity and quality of data that can be gathered ó 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 ó rather than strapped to a chair in the lab ó would be rather empowering.
Wireless BCI installed in monkey and pig.
Brownís wireless BCI, fashioned out of hermetically sealed titanium, looks a lot like a pacemaker. Inside thereís 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 BCIís 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 deviceís 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 ďmitigated by liquid cooling the area with chilled water during the recharge process and did not notably affect the animalís comfort.Ē Another important factor is that the researchers were able to extract high-quality, ďrichĒ neural signals from the wireless implant ó a good indicator that it will also help human neuroscience, if and when the device is approved.
Professor: Reason Itself Is A White Male Construct 2015-07-04 3:55
A philosophy and religion professor at Syracuse University gave an interview to The New York Times Thursday in which he critiqued the notion of pure reason as simply being a “white male Euro-Christian construction.”
Prof. John Caputo was being interviewed by fellow philosophy professor George Yancy for the 13th installment of an interview series Yancy conducts with philosophers regarding racial topics.
Given its emphasis on first principles ...
The Broken Window Fallacy 2015-07-04 3:48
Youtube description: This short video explains one of the most persistent economic fallacies of our day.
Jenji Kohan and the Jewish Hyper-Sexualization of Western Culture 2015-07-04 3:33
As detailed in The Culture of Critique, Freud and his followers regarded anti-Semitism was a universal pathology which had its roots in sexual repression. The theoretical basis for this can be found in Freud’s Three Essays on the Theory of Sexuality where he linked aggression to the frustration of human drives — especially the sex drive. Kevin MacDonald notes that: ...
Confederate History - Dispelling the Myths 2015-07-03 3:28
History books, the media, the school systems, etc abound in falsehoods and inaccuracies of Confederate and Southern history. This fact sheet will help to clarify and dispell some of these rampant inaccuracies.
MYTH - The War of 1861 - 1865 was fought over slavery.
FACT - Terribly untrue. The North fought the war over money. Plain ...
Gays Rights May Open Door for Pedophile Rights 2015-07-03 3:31
Democrats have attempted to normalize pedophilia as a sexual orientation.
A recent Supreme Court ruling on same-sex marriage may soon allow pedophiles to argue they are suffering discrimination.
‚ÄúUsing the same tactics used by ‚Äėgay‚Äô rights activists, pedophiles have begun to seek similar status arguing their desire for children is a sexual orientation no different than heterosexual or homosexuals,‚ÄĚ writes Jack Minor ...