Teach a monkey to control a robotic arm by thought


07/06/2010

Researchers from the University of Pittsburgh (University of Pittsburgh), demonstrated a monkey who controls a robotic arm with their thoughts. This experiment was conducted Dr. Andrew Schwartz (Andrew Schwartz), who is a professor of neurobiology. The experiment succeeded in developing a complex robotic arm that supports a high level of control and is capable of producing intricate manipulation.

This is not the first time Dr. Schwartz implants sensors in the monkey brain to control a robotic arm. Back in May 2008, Dr. Schwartz, a series of experiments, but with a simpler mechanical arm, to train a monkey to feed itself. It was the hand with four degrees of freedom, a fitted shoulder joints, elbow and easy grip.

In the video you can see above, the monkey in the lab of Dr. Schwartz’s robotic arm is eating sweets and fruit pieces, while mobility is limited by its own hands.

In the course of this year took place in the experiments in the monkey brain were implanted with two sensors. One of them was implanted in the cortex area of the head that controls the brush, and the second in the area of controlling the hand from the wrist to the shoulder. Sensors measure the activity of motor neurons, and forwards the received information to the computer. A computer translates the signals into commands that are understood by a mechanical arm. These teams and operated robotic arm.

In the video above, the monkey (in the video, it is on the right) by pressing the button on the right hand moves the arm in a comfortable position. Then, you can watch as she uses a robotic arm to grab the arm.

When the monkey missing arm, she puts a straw in his mouth, through which, in the quest rewards, comes a drink. After a while, the monkey takes a straw in her mouth before being grabbed arm, knowing that there will be a drink.

This advanced robotic arm has seven degrees of freedom, while in 2008 only had a hand in four degrees of freedom. Additional three degrees of freedom, derive hinged brush that can perform movements like throwing, rolling and rocking. These movements allow the monkey precise movement to turn the button with a mechanical brush.

Scientists hope to establish a direct connection between brain and machine, they will be able to create advanced prosthetic devices that allow paralyzed people to lead a near-normal life.

At this point, Dr. Schwartz and his colleagues have published a detailed report about their latest experiments.

In the experiment, researchers from the University of Pittsburgh have taught a monkey to control an advanced robotic arm with thoughts. The monkey learned to perform with the help of the intricate movements of the arm. Image courtesy of the University of Pittsburgh. Want to be the first to know about the most important - free news ticker, be the first.

Original: Physorg.com


Monkeys are able to distinguish words
Fish are measured relatives by smell
Unbelievable but true: the insects attack and kill amphibians
Scientists have found out when the dogs become more aggressive
The fossil of an extinct species of sea cow discovered in the Philippines