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Bionic gives fingertip surface structure by
A team from Switzerland has to feel it succeeded a man different surface structures through a bionic finger. The patient could feel the difference between rough and smooth through sensors in the bionic finger.
The finger was linked to Aabo Dennis Sørensen who lost his hand in 2003 after a fireworks accident. He has repeatedly with the team at the Ecole Polytechnique Fédérale de Lausanne cooperation , including in 2014 when he got a bionic hand with touch.
Now the finger with electromechanical sensors, was connected to the electrodes already present in his upper arm. The sensors were then connected to a computer. These computer to put the signal into a sequence of commands that the associated nerves were stimulated in the remaining stretch of the upper arm via man electrodes. The pattern simulated that which would occur naturally as a real finger sweeps over a surface.
To the test , the researchers confirmed the finger to a machine which automatically slid across different types of plastic with different texture. If the finger moved, the Sørensen blindfolded for the investigation took a sense of texture where the place where previously was the index finger of his hand amputated. He could guess the right type of surface in 96 percent of cases.
Sørensen says in a message from the EPFL to feel very close to the feeling in his arm came true. He could feel the coarseness and the difference between the bumps. The idea is to eventually combine with fingertips feeling full armprotheses.
Besides testing Sørensen did the researchers also tests with people who had lost no arm. In these subjects, four electrodes, the size of a thin needle were inserted into the upper arm. These volunteers were divided into 77 percent of the time difference.
The researchers also compared the brainwaves of people without amputated arm with what they observed when they ‘feel’ through the bionic finger. In both cases, the brain waves were similar.Viewing:-160
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