Scientists at the Washington University in St. Louis have created a new device that can stimulate nerve cells in the prosthetic arm and produce a sense of touch that are not really happening.
The macro-sieve device they developed is designed to interface with the ulnar and median nerves in the arm. It's tiny and flexible, and looks like a wheel with holes drilled through it. The holes allow the nerve to grow through them, linking any potential sensing device to the central nervous system.
Hand Fractures
Hand fractures are very common and can result in disability if not treated adequately.
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The researchers will be testing the device on primates to see how well it transmits sensory data and will compare it to the commonly used cuff electrodes. The team has planned to conduct a study to identify the maximum number of concurrent channels that can be used to transmit signals, which will point to the maximum number of touch and temperature sensors that can be used with the new device.
"If this works to stimulate motor neurons in muscles, we can certainly stimulate sensory neurons, and that's never been done in a behavioral model in non-human primates," said Daniel Moran, PhD, professor of biomedical engineering at Washington University in St. Louis and lead researcher of this study.
![Research: Hand Size Appears to Stay Constant, Providing Natural]( "Research: Hand Size Appears to Stay Constant, Providing Natural")
New research has revealed that people tend to perceive their dominant hand as staying relatively the same size even when it's magnified.
"The more real estate the brain uses, the more processing power and the more important something is," Moran says. "The hand area in the somatosensory cortex is a big piece of brain, so there should be a lot of bandwidth. We think we'll be able to send a lot of information to it."
Source: Medindia
Research: Hand Size Appears to Stay Constant, Providing Natural 'Ruler'
New research has revealed that people tend to perceive their dominant hand as staying relatively the same size even when it's magnified.
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"The more real estate the brain uses, the more processing power and the more important something is," Moran says. "The hand area in the somatosensory cortex is a big piece of brain, so there should be a lot of bandwidth. We think we'll be able to send a lot of information to it."
Source: Medindia
Wash Your Hands Off Your Antibacterial Soap
New research shows that washing hands with antibacterial soap exposes hospital workers to potentially unsafe levels of one of its ingredients called triclosan.
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 Hand Tremor Symptom EvaluationHand tremors are unintentional rhythmic movements of the hand that occur either at rest or with motion. | Advertisement
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