ISSN 1612-3352

Editors in Chief

Prof. Dr. Claus F. Claussen, Neurootological Research Institute of the Research Society for Smell, Taste, Hearing and Equilibrium Disorders at Bad Kissingen (4-G-F). Bad Kissingen, Germany.
Dr. med. Julia M. Bergmann,
Dr. med. Guillermo O. Bertora,
Otoneuroophthalmological Neurophysiology,
Buenos Aires, Argentina.

Production Managers

Dr. med. Julia M. Bergmann,
Dr. med. Guillermo O. Bertora,
Otoneuroophthalmological Neurophysiology,
Buenos Aires, Argentina.


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The editors welcome authors to submit articles for publications in the ASN.

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A New Tinnitus Model Investigated through Brain Electric Tomography – LORETA -

Abstract

Brain neurosensorial disorders, i.e: tinnitus, represents one of most reasons of disability.

The most often used methods for functional imaging of the human brain are positron emission tomography (PET) and functional magnetic resonance imaging (fMRI).

These tomographies provide three-dimensional (3D) images comprising information on metabolism.  Although the spatial resolution of these images is excellent, the temporal resolution is not  high enough to keep up with the speed at which neuronal processes occur.

During year 2000, we have started studying our patients  by means of Brain Electric Tomography (LORETA) – Pascual Marqui – 1994. 

Through LORETA, it is not only possible to study spatial distribution but also knowing the different cerebral activity areas.

200 patients presenting tinnitus symptoms have been studied and results were compared vs. those obtained in 40 normal patients.

In the group of tinnitus patients a common pattern of pathology is observed:

  1. Compromised BA 21 and 22
  2. Compromised BA 47

Through neuroimaging diagnoses metabolic alterations are detected due to consuming Oxygen or Glucose.  These alterations could respond to hypo or hyper neuronal function, being unable to establish a diagnosis of the type of neuronal electrical alteration of the area. 

To order to establish an specific treatment for tinnitus it is necessary to count on methods sensitive enough capable of demonstrating total or partial therapeutic modifications produced in patients under the established therapy.

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