Posts Tagged ‘Monkeys’
By hacking into a monkey’s brain researchers at Pittsburgh University have managed to make the monkey feed itself by using a robot arm. More info: motorlab.neurobio.pitt.edu
Video Rating: 4 / 5
Seen here looking suspiciously like the silhouette of Bat Boy wielding a Green Lantern power ring to return to the Matrix or some shit, a drawing of a monkey plays with his virtual arm. Because monkeys can do that now. They’ve always wanted to, and now they actually can. *dodges virtual turd* I saw that, Diddy Kong!
A brain implant that allows monkeys to move an avatar’s arm and feel objects in a virtual world has been demonstrated for the first time.
The animals used the device to control the arm by thought alone, and feel the texture of the objects it touched through electrical signals sent directly to their brains.
Researchers built the system as part of a major effort to help paralysed people regain the use of their arms and legs, feeling the objects they touch and the ground they walk on.
Without any sensation of touch, it would be easy for people to crush or drop objects they were trying to grasp, or misjudge the terrain underfoot and stumble, the scientists said.
Now I know what you’re thinking, “OMG, how can I use this for sexual gratification?!” But if you could get your mind out of the smut-gutter for one second you’d realize the much more significant ramifications of this project: knowing what it feels like to have more than two arms and legs. RAWR, LOOK AT ME — I’M ANT-MAN AND I’M HERE TO RUIN YOUR PICNIC.
Thanks to Samantha, who controls her virtual arms the regular way: with an XBox controller. Awh shishi girl, what’re we playing?
Monkey mind-controlled arm: It sounds like the name of an awesomely terrible sci-fi film or a fledgling grindcore group, but it’s a very real phenomenon, and one that could pay significant dividends for paraplegics everywhere. Neurobiology professor Miguel Nicolelis and his team of researchers at Duke University recently devised a method by which monkeys (and, perhaps one day, humans) can control a virtual arm using only their brains. It’s a concept similar to what DARPA has been pursuing with its mind-controlled “Luke” arm, with one important difference: Nicolelis’ system not only allows users to remotely execute motor functions, but provides them with near-instantaneous sensory feedback, as well. Most similar techniques use electrode implants to stimulate brain activity, but this can create confusion when a patient’s brain sends and receives signals to and from a prosthetic arm. Nicolelis circumvented this problem with a new interface that can read and transmit brain signals to an artificial limb, before switching to a receptive mode in just milliseconds.
After designing the technology, Nicolelis and his colleagues tested it on two, electrode-equipped rhesus monkeys. One set of electrodes was placed in the motor cortex of each animal, with the other implanted within their brains’ sensory regions. They then trained the monkeys to look at a three identical objects on a computer screen and to “touch” each object with a virtual arm, controlled by signals sent from the brain electrodes. Only one of the three objects had a so-called “virtual texture,” which, if selected with the on-screen arm, would send a sensory signal back to the monkey’s brain (while triggering a tasty squirt of fruit juice for the lucky contestant). The two rhesus species ended up passing the test with flying colors, resulting in a “proof of principle” that Nicolelis’ system can send tactile signals to the brain in almost real-time. The scientists have already developed a way for monkeys to control the arm wirelessly, and are now embedding their technology within a full-body, mind-controlled exoskeleton for paralyzed patients, as well. Of course, the technology still needs to be tested on actual humans, though Nicolelis seems confident that he and his team have already cleared the most difficult hurdle: “Since we cannot talk to the monkeys, I assume with human patients, it’s going to be much easier.”