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02-24-2017, 07:23 PM
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Na** Thread Enables Scientists to Extend Length of Brain Implant Efficacy
Na** Thread Enables Scientists to Extend Length of Brain Implant Efficacy
 (A and B) As-fabricated NET-50 and NET-10 probes on substrates. (C and D) Zoom-in views of two electrodes as marked by the dashed boxes in (A) and (B), respectively. (G) A NET-50 probe suspended in water. A k**t is made with a curvature of less than 50 خ¼m to illustrate its flexibility and robustness. (H) Multiple NET-10 probes suspended in water. Scale bars, 100 خ¼m (A), 50 خ¼m (B, G, and H), and 10 خ¼m (C and D).Researcher Dr. Luan and his interdisciplinary team from the University of Texas at Austin have developed an ultra flexible na**electronic Thread (NET) that has the potential to offer a new type of the long-term neural implants. Neural probes are used to directly measure or even stimulate electrical activity in specific regions of the brain. However, despite the many advances in the field, issues with biocompatibility have limited the prospects and usefulness of the tech**logy. Conventional probes induce scarring around the Implant over time, which in turn increasingly impairs the devices’ ability to measure electrical impulses. This scarring is a result of conventional probes’ width, material, and lack of flexibility. Due to the micrometer dimensions of the NET and its insulation, the Implant doesnâ??t trigger the development of scar tissue and continues working for months at a time. Publishing in the journal Science Advances, the researchers describe the NET from 7 nm na**probes layered together and two to three layers of insulation. The layers together total to about 1 آµm in thickness, which grants the probe flexibility that is almost 1000 times greater than conventional probes. This flexibility allows the device to remain in place without hindering the movement of or displacing surrounding tissue. The probe, though significantly smaller, still records data using the same method as standard neural probes. The recording electrodes are evenly placed on the probe, and the collected electrical impulses are communicated to connected devices through microfabricated connections. Thanks to this advancement, in their study researchers were able to track a cohort of rats for months without inducing any scarring or experiencing declining data quality. Dr. Luan and his colleagues intend to collaborate with neurosurgeons to develop better implantation techniques, and in the meantime, continue to work on and improve the underlying tech**logy. There is immense potential to conduct long term studies of neurophysiological disorders with the development of better neural probes and implants. Open access study in journal Science Advances:آ*Ultraflexible na**electronic probes form reliable, glial scarâ??free neural integration… Via:آ*The University of Texas at Austin… This post Na** Thread Enables Scientists to Extend Length of Brain Implant Efficacy appeared first on Medgadget. ??????? ??????: Na** Thread Enables Scientists to Extend Length of Brain Implant Efficacy || ??????: rss || ??????: اسم منتداك
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