With the chest "touch" object, the bionic arm also know the cold and warm pain

for the disabled, old-fashioned prosthesis is largely a set-up, with no actual functionBut the bionic arm allows the patient to control theof hismovement through the mind, and can also re-enjoy the long-lost touchScientists believe the birth of a flexible, beautiful bionic limb as a real arm is not far offUpdate: "Touching" objects with chests
Jesse Sullivan, 60, and Claudia Mitchell, a 27-year-old American veteran, are the firstmaleandwomen'swith new bionic arms, the Guardian reported on November 27Not long ago, the nation's best rehabilitationhospitalthe Chicago Institute of Rehabilitation added pressure sensors to their bionic arms that delivered contact signals to the sensor receiver under the skin of the chest and produced a faint tingling sensation that would make the patient the equivalent of touching objects with their chestsThe results are the latest breakthrough in the institute's research on neurodirected redistribution, Tr, by DrTodd Kuken, director of the Institute's Center for Neuroengineering Bionics By signaling the stimulation of different areas of the chest, the disabled can feel different touches from the wrist, palm and back of the hand, even though he uses only a stainless steel robotic arm Paul Marasco, a neurophysiologist who was involved in the study, said: "The prosthesis does not transmit any sensory signals, so disabled people must look at things rather than feel them Now we can feed the haptic feedback to the brain through normal neural channels "
of course, because the chest skin itself has tactile nerve cells, the signals they send are sometimes mixed with irritation from the bionic arm, even covering it up The study, published in the Proceedings of the National Academy of Sciences, found that as long as the arm's contact pressure increased, Sullivan and Michelle were able to separate them from the chest's own touch In addition to stress, they can even distinguish between hot and cold temperatures and relive the pain Breakthrough technology: Using the brain to dominate prosthetics the latest "artificial touch" technology has taken the development of bionic arms a big step forward In February, Dr Cooken published a breakthrough in bionic technology in The Lancet, using the brain to manipulate the robotic arm Mr Cooken came up with the idea of using nerves at the end of the limb to control the prosthesis 20 years ago, but the challenge was that the nerve signals were too weak After years of research, he finally invented the "neurodirectional redistribution" technology Through surgery, nerves at the left end of the patient's broken arm are connected to the chest muscle group, which receives and amplifies electrical impulses from the brain and then transmits them to sensors in the bionic arm to control their movement Here, the pectoral muscle acts as a signal "transit station" and "amplifier" Trained to lose an arm in a car accident, Michelle has been able to manipulate her prosthetics by "brain-moving" and can now use it to cut steaks and peel bananas Sullivan, who lost his arms to electric shock, can now use a bionic arm to bend his elbows or clench his fists, and he's trying to drive in such difficult moves "The bionic arm gave me a lot of hope," Sullivan said In the past I was an independent person who never begged for help I can do things myself, I will certainly do it myself "
ultimate goal: to make prosthetic hands the same as real hands
Bionic research is funded by several agencies, including the Defense Advanced Research Projects Administration The researchers hope to combine electromyoelectric sensing technology with "numerically controlled limbs" to make the bionic arm easier to use and feel sharper "Our next research goal is to implant more signal processors in the chest muscles, and the irritation they produce will give people a five-finger feel, such as the texture of the object, " says Mr Marasco "
of course, disabled people would prefer to wear this bionic arm and then they want to do whatever they want In June, the Johns Hopkins University Institute of Applied Physics, which was involved in the bionic arm study, showed the public a second-generation bionic-like arm that can perform 30 different movements, including tiny movements such as holding a ball, holding a cylinder, a vertical index finger, and pressing the thumb to the palm Their goal is to create, by the end of 2009, an artificial arm that looks the same as a real arm, is beautiful, natural, movement
and has a sensitive sense of touch (Cong)