Tinnitus and event related potentials: a systematic review
Andréia Aparecida de Azevedo1, Ricardo Rodrigues Figueiredo2, Norma de Oliveira Penido3
1Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Otorrinolaringologia Sul Fluminense (OTOSUL), Volta Redonda, RJ, Brazil.
Brazilian Journal of Otorhinolaryngology
|November 23, 2019
Summary
Tinnitus patients show altered auditory event-related potentials (AERPs) in latency and amplitude compared to controls. These changes in AERPs can help understand tinnitus causes and treatment effectiveness.
Area of Science:
- Neuroscience
- Audiology
- Clinical Research
Background:
- Tinnitus is the perception of sound without an external source.
- Previous studies suggest differences in auditory event-related potentials (AERPs) between tinnitus patients and healthy individuals.
Purpose of the Study:
- To systematically review scientific evidence on alterations in latency or amplitude of AERPs in individuals with tinnitus.
Main Methods:
- A literature review was conducted using databases: SciELO, Lilacs, ISI Web, and PubMed.
- Included studies were published in English, Portuguese, French, or Spanish, correlating tinnitus with AERP changes.
Main Results:
- Twelve articles were initially identified, with eight meeting the inclusion criteria.
- The selected studies indicated changes in the latency and/or amplitude of AERPs in tinnitus patients compared to the control group.
Conclusions:
- AERPs exhibit alterations in tinnitus patients, varying with tinnitus severity, lesion site, and response to interventions.
- AERPs may aid in identifying neurotransmitters involved in tinnitus and in evaluating treatment efficacy.
