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Study Says Ringing in the Ears may Be Treated Successfully
Tinnitus is defined as the perception of sound in the absence of external sound and can manifest itself in variety of ways.
"The phantom sounds of tinnitus may sound like ringing, clicking or hissing. The sounds can change with the time of day and often cause sleep problems and emotional distress," Mennemeier said.
Mark Mennemeier, Ph.D., associate professor of neurobiology and director of the Transcranial Magnetic Stimulation Laboratory in the Center for Translational Neuroscience (CTN) at UAMS, collaborated with John Dornhoffer, M.D., professor of otology/neurotology at UAMS and a clinician/scientist in the CTN, to design the treatment study.
A single patient was tested to examine the safety and feasibility of using maintenance sessions of low-frequency repetitive transcranial magnetic stimulation (TMS) to reduce tinnitus loudness and prevent its return over time.
TMS involves the placement of a coil on the scalp that creates a magnetic field over the brain's surface.
The magnetic field penetrates up to two or three centimeters from the surface of the coil.
An electric current is induced by the magnetic field that either activates or inhibits neural activity.
The goal of the study was to inhibit excessive neural activity believed to cause tinnitus.
"We use a PET scan of the patient's brain to look for excessive neural activity with increased blood flow in the temporal lobe. Then we target that area with low-frequency TMS to inhibit the neural activity and decrease the tinnitus," Mennemeier said.
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