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A Cure for the Tyranny of Tinnitus? March 3, 2011 by Emma Filed under Tinnitus News Two recent studies provide hope for those afflicted with tinnitus, an annoying and sometimes debilitating ringing in the ears. One study shed light on a possible cause of the troubling disorder. The researchers, led by Josef Rauschecker of Georgetown University Medical Center in Washington, used high-tech MRI scans to zero in on areas of the brain linked to the phantom ringing. Dr. Rauschecker noted that tinnitus tends to occur in people who have suffered a loss of hearing in certain frequencies as a result of normal aging, loud-noise exposure or an accident. The brain, he said, tries to compensate for the partial hearing loss. “The neighbouring frequencies sort of expand into the gap,” he said, which results in the ringing sound. Anyone who has been to a rock concert or listened to music at an extremely high volume, will have noticed a ringing in the ears for a day or so. Eventually, though, the ringing disappears. But for people with tinnitus, the ringing persists. The MRI scans revealed that part of the brain (the ventromedial prefrontal cortex) that would normally turn off or cancel out the ringing is unusually small in people with tinnitus. “Hopefully, we can find some therapies [to treat tinnitus] that are based on this new knowledge,” said Dr. Rauschecker, whose study was published in the journal Neuron. In the second study, researchers at the University of Texas and MicroTransponder Inc. in Dallas, report they were able to eliminate tinnitus in rats by stimulating the vagus nerve in the neck while simultaneously playing a variety of sound tones over an extended period of time. They compared their novel therapy to hitting a “reset button” that basically retrains a part of the brain that interprets sounds. Their findings were published in the journal Nature. Dr. Rauschecker said, in some respects, the two research papers are “highly” complementary. “The vagus nerve stimulation they used could well exert its effects … [through] the same structures we found to be involved in tinnitus.”
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Lijek za Tinnitus Tiranija? Ožujak 3, 2011 prema Emma Varalica pod Tinnitus Vijesti Dvije nedavne studije pružiti nadu onima potlačeni s zujanje u ušima, dosadne i ponekad debilitating zujanje u ušima. Jedno istraživanje je prolio svjetlo na mogući uzrok poremećaja zabrinjavajućim. Istraživači, pod vodstvom Josefa Rauschecker mjesta Georgetown University Medical Center u Washingtonu, koristi high-tech MRI da nula na područja mozga povezana s fantom melodije. Rauschecker napomenuti da zujanje u ušima ima tendenciju da se javljaju u ljudi koji su pretrpjeli gubitak sluha u određenim frekvencijama, kao rezultat normalnog starenja, glasno-izloženost buci ili nesreće. Mozak, he said, pokušava nadoknaditi za djelomični gubitak sluha. “Vrsta susjednim frekvencijama proširiti na jaz,” he said, kazao jerezultira u zvonjenje. Svatko tko je bio u rock koncert ili slušati glazbu na vrlo veliku količinu, će imati primijetio zujanje u ušima za dan ili na taj način. Konačno, iako, melodije nestaje. No, za osobe sa šumom, melodije nastavi. MRI pokazali da dio mozga (ventromedial prefrontalni korteks) koji bi inače isključiti ili poništiti zvoni neobično mala kod ljudi sa šumom. “Nadajmo se, možemo naći neke terapije [za liječenje zujanje u ušima] koji se temelje na ovom novih znanja,” , rekao je dr.. Rauschecker, čija je studija objavljena u časopisu Neuron. U drugoj studiji, Istraživači na University of Texas i MicroTransponder Inc. u Dallas, Izvješće su mogli eliminirati Tinnitus u štakora stimulirajući vagus nerve u vrat, a istovremeno igranje raznih zvuk zvona tijekom dužeg vremenskog razdoblja. Usporedili su svoje nove terapije za udaranje “reset gumb” da je u osnovi retrains dio mozga koji interpretira zvukove. Njihovi nalazi su objavljeni u časopisu Nature. Rauschecker, rekao je, na neki način, dvije znanstvene radove su “visoko” dopunski. “Vagus nerve stimulacija su se mogli dobro vršiti njegove posljedice ... [kroz] iste strukture utvrdili smo da se uključe u zujanje u ušima.”