Tag Archive | "nerves"

Brain cells help nerves regenerate

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In a promising new area of cell regeneration study, researchers have discovered that brain cells called astrocytes.

Researchers have uncovered a completely unexpected way that the brain repairs nerve damage, wherein cells known as astrocytes deliver a protective protein to nearby neurons.

While the ability of astrocytes to produce MT has been known for decades, the general view was that the MT stayed within astrocytes to protect them while they help repair damaged areas. However, Chung and colleagues demonstrated that MT was present in the external fluid of damaged rat brain. Furthermore, with the aid of a fluorescent MT protein, they observed that MT made in astrocytes could be transported outside the cell and then subsequently taken up by nearby nerves, and that the level of MT uptake correlated with how well the nerves repaired damage.

Brain powered robotics: Japanese researchers build The Borg

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Pinktentacle translates a cyborg project from Asahi into English for those of us who aren’t blessed with the ability to read Hiragana/Katakana…and what they’ve dug up is astonishing! Japanese researchers have been implanting electrodes for monitoring activities directly into subjects brains. Researchers have already applied with ethics committees to begin robotic testing and expect to have great success. Resistance is futile.

The researchers, who have filed a license application with the Osaka University Hospital ethics board, are working to enlist willing subjects already scheduled to have brain electrodes implanted for the purpose of monitoring epilepsy or other conditions. The procedure, which does not involve puncturing the cortex, places an electrode sheet at the central sulcus, a fold across the center of the brain near the primary motor cortex (which is responsible for planning and executing movements).

To date, the researchers have worked with four test subjects to record brain wave activity generated as they move their arms, elbows and fingers. Working with Advanced Telecommunications Research Institute International (ATR), the researchers have developed a method for analyzing the brain waves to determine the subject’s intended activity to an accuracy of greater than 80%. The next step is to use the data to control robot arms developed by the University of Tokyo’s Department of Precision Engineering.

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