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Psychoacoustic classification of persistent tinnitus.

Flavia Alencar de Barros Suzuki1, Fabio Akira Suzuki1, Ektor Tsuneo Onishi1

  • 1Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina (EPM), Departamento de Otorrinolaringologia e Cirurgia Cabeça e Pescoço, São Paulo, SP, Brazil.

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Summary

A new classification system for persistent tinnitus categorizes sounds as pure tone or noise, aiding in understanding patient experiences. This research helps characterize tinnitus peculiarities and their impact on individuals.

Keywords:
AudiometriaAudiometryPsicoacústicas/característicasPsychoacoustic/characteristicsTinnitus/classificationZumbido/classificação

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Area of Science:

  • Otolaryngology
  • Audiology
  • Neuroscience

Background:

  • Tinnitus is a challenging symptom with varied patient responses and existing classification systems.
  • Understanding tinnitus origin and associated conditions is crucial for effective treatment.

Purpose of the Study:

  • To propose a unified, measurable classification for persistent tinnitus.
  • To categorize tinnitus based on perception (nature/daily sounds) and acoustic properties (pure tone/noise, pitch).

Main Methods:

  • 110 adult tinnitus patients were assessed using audiological evaluations.
  • Methods included Pitch Matching, Loudness, Visual Analog Scale, Tinnitus Handicap Inventory, and Minimum Masking Level.

Main Results:

  • 181 tinnitus complaints were identified: 51% pure tone, 49% noise; 10% low frequency, 90% high frequency.
  • Pure tone tinnitus averaged 5.47 (VAS) and 12.31 dB (Loudness); noise tinnitus averaged 6.66 (VAS) and 10.51 dB (Loudness).
  • Multiple tinnitus showed higher Tinnitus Handicap Inventory scores (61.38).

Conclusions:

  • Classifying tinnitus as pure tone or noise, by frequency, reveals its unique characteristics.
  • This classification aids in understanding the specific effects of tinnitus on patients' lives.