neurosciencestuff:

A sensational breakthrough: the first bionic hand that can feel

The first bionic hand that allows an amputee to feel what they are touching will be transplanted later this year in a pioneering operation that could introduce a new generation of artificial limbs with sensory perception.

The patient is an unnamed man in his 20s living in Rome who lost the lower part of his arm following an accident, said Silvestro Micera of the Ecole Polytechnique Federale de Lausanne in Switzerland.

The wiring of his new bionic hand will be connected to the patient’s nervous system with the hope that the man will be able to control the movements of the hand as well as receiving touch signals from the hand’s skin sensors.

Dr Micera said that the hand will be attached directly to the patient’s nervous system via electrodes clipped onto two of the arm’s main nerves, the median and the ulnar nerves.

This should allow the man to control the hand by his thoughts, as well as receiving sensory signals to his brain from the hand’s sensors. It will effectively provide a fast, bidirectional flow of information between the man’s nervous system and the prosthetic hand.

“This is real progress, real hope for amputees. It will be the first prosthetic that will provide real-time sensory feedback for grasping,” Dr Micera said.

“It is clear that the more sensory feeling an amputee has, the more likely you will get full acceptance of that limb,” he told the American Association for the Advancement of Science meeting in Boston.

“We could be on the cusp of providing new and more effective clinical solutions to amputees in the next year,” he said.

dolliecrave:

worth a read.

resistereeterno:

Marina Abramović, “Rhythm 0,” 1974

Marina Abramović is best known for her performance pieces, in which she tries to explore what is possible for an artist to do in the name of art. Her best known piece was the recent “The Artist Is Present,” in which she sat motionless for 736.5 hours over the course of three months, inviting visitors to sit opposite her and make eye contact for as long as they wanted. So many people began spontaneously crying across from her that blogs and Facebook groups were set up for those people. 

Her bravest piece, however, is my favorite. This piece was primarily a trust exercise, in which she told viewers she would not move for six hours no matter what they did to her. She placed 72 objects one could use in pleasing or destructive ways, ranging from flowers and a feather boa to a knife and a loaded pistol, on a table near her and invited the viewers to use them on her however they wanted. 

Initially, Abramović said, viewers were peaceful and timid, but it escalated to violence quickly. “The experience I learned was that … if you leave decision to the public, you can be killed… I felt really violated: they cut my clothes, stuck rose thorns in my stomach, one person aimed the gun at my head, and another took it away. It created an aggressive atmosphere. After exactly 6 hours, as planned, I stood up and started walking toward the public. Everyone ran away, escaping an actual confrontation.”

This piece revealed something terrible about humanity, similar to what Philip Zimbardo’s Stanford Prison Experiment or Stanley Milgram’s Obedience Experiment, both of which also proved how readily people will harm one another under unusual circumstances. 

This performance showed just how easy it is to dehumanize a person who doesn’t fight back, and is particularly powerful because it defies what we think we know about ourselves. I’m certain the no one reading this believes the people around him/her capable of doing such things to another human being, but this performance proves otherwise.