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Binaural Interaction in Tinnitus Patients
Takwa A Gabr1, Reham M Lasheen2
1Audiovestibular Medicine, Faculty of Medicine, Kafrelsheikh University, Kafr El-Shaikh, Egypt.
Audiology & Neuro-Otology
|May 14, 2020
Summary
Tinnitus patients with normal hearing show auditory brainstem response (ABR) abnormalities, indicating binaural processing deficits along the auditory pathway. These findings suggest impaired sound processing in the brainstem for individuals experiencing tinnitus.
Area of Science:
- Auditory Neuroscience
- Clinical Audiology
Background:
- Auditory Brainstem Response (ABR) is a key tool for hearing evaluation.
- ABR's Binaural Interaction Component (BIC) assesses binaural processing in the auditory pathway.
Purpose of the Study:
- To investigate binaural processing in individuals with normal hearing who report tinnitus.
- To identify potential auditory pathway dysfunction in tinnitus patients.
Main Methods:
- Compared ABR in 30 tinnitus patients and 30 healthy controls with normal hearing.
- Utilized monaural and binaural ABR recordings, including BIC analysis.
- Performed standard audiological evaluations.
Main Results:
- Tinnitus group exhibited delayed ABR wave latencies and reduced amplitudes compared to controls.
- Binaural ABR also revealed significant differences between groups.
- Control group showed earlier BIC latencies for waves I and V.
Conclusions:
- Findings suggest binaural processing deficits in tinnitus patients.
- These deficits occur at various levels of the ascending auditory pathway.
- ABR can reveal subclinical auditory processing issues in tinnitus.
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