Wow! Let’s move fingers mind-controlled artificial arm
#Cosmoread: A new mind-controlled prosthetic hand device according to a new study by the toes wiggle just thinking about it was used to help a patient, and the patient requires very little training.
Research is still in its early stages, possibly people who, due to injury or illness, lost weapons could help achieve some mobility, the researchers said.
“We believe that this is the first time a person using a mind-controlled prosthesis immediately without extensive training person has performed the movements,” study senior author Dr. Nathan Crone, Johns Hopkins University School of Medicine nerve science professor, said in a statement. “This technology goes beyond artificial limbs, artificial points, or fingers, a single unit like the one used to hold a tennis ball, moved to create a grabbing motion.”
Hand or an arm missing man not in use
However, a hand or an arm missing man was not in use. He was in the hospital for treatment of epilepsy, and already undergo brain mapping to be set so that the doctors could determine was where seizures started in his brain, the researchers said.
Doctors surgically her seizures to track the implanted electrodes in the brain of man. But they also mapped and that move each finger, pinky and thumb found in specific areas of their brain.
That was no easy feat. The size of a business card on a rectangular film – – A neurosurgeon carefully placed an array of sensors 128 electrodes in the brain of the man’s hand and arm movement controls. Each sensor in the brain of a small, circular space that diameter 0.04 inches (1 millimeter) measured cover.
After implantation, the researchers asked the man to wiggle the fingers individually. Teams which their brains “lit up” when neural electrical activity detected by the sensor each finger movement part mentioned.
The team also felt in parts of the brain were involved in contact. At the tip of each finger of a glove that the man gave vibrated. Then, the researchers that the brain “lit up” when the man felt the vibrations on his fingers the different areas identified.
Motor (movement) and sensory After collecting data, the researchers, an artificial arm, the Johns Hopkins University Applied Physics Laboratory, which was developed in the program. When a certain part of the human brain electrical activity, expressed a similar artificial finger will be taken.
It was the ultimate mind-reading machine electrode sensors. The researchers attached electrodes to the prosthesis, and the man told one of his fingers at a time to think about going. When the man moved his fingers within moments of real, artificial fingers moved on hand, too.
“This study used electrodes to measure brain activity to us and we used previously in the brain, allowing for more accurate spatial mapping of a large area of cortex than anything gave better solution,” boy Hotson, a graduate student and lead author of the study. “This precise fingertip control of individual we have allowed to separate.”
First, the mind-controlled arm while only 76 percent accurate. But then, ring and pinky fingers coupled together researchers, which increased the accuracy to 88 percent, he said.
“Pinky and ring finger of the brain that controls part of the overlaps, and most people tend to take two fingers together,” Crone said. “It makes sense to improve the accuracy of coupling these two fingers.”
Furthermore, the device is easy to use, and does not require extensive training, the researchers said.
However, the technology is still years away from clinical use, and it likely will be expensive, the researchers said. But undoubtedly it will help many people. Hands or arms cut off over 100,000 people living in the United States with the Amputee Coalition of America, a Virginia-based non-profit organization that people who have experienced amputation or limb loss represents, according to the area.
There are already a number of people with missing limbs technologies are designed to help. For example, advances in prostheses and artificial skin to restore the sense of touch for people who want to help, even if they lost the foot.