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Published on: August 8, 2011
Auditory evaluation in Parkinsonian patients.
Süleyman Yýlmaz1, Elif Karalý, Abdurrahman Tokmak
1Department of ENT and Head and Neck Surgery, Düzce Medical Faculty, Düzce University, Düzce, Turkey. dryilmazsuleyman@yahoo.com
Summary
Parkinson's disease (PD) patients show auditory pathway changes. Pure tone audiometry and brainstem auditory evoked potentials reveal significant differences in hearing and neural signal processing in individuals with PD.
Area of Science:
- Neuroscience
- Audiology
- Neurology
Background:
- Parkinson's disease (PD) is a neurodegenerative disorder affecting motor function.
- Auditory system involvement in PD is not fully understood.
- Previous research suggests potential subclinical auditory deficits in PD.
Purpose of the Study:
- To investigate auditory function in Parkinson's disease patients using pure tone audiometry (PTA) and brainstem auditory evoked potentials (BAEPs).
- To determine if specific hearing frequencies or auditory pathway latencies are affected in PD.
Main Methods:
- Twenty Parkinson's disease patients and 24 healthy controls underwent PTA and BAEPs testing.
- Audiometric thresholds were assessed at various frequencies, including 4,000 and 8,000 Hz.
- BAEPs measured wave V and I-V interpeak latencies to assess auditory pathway integrity.
Main Results:
- Parkinson's disease patients exhibited significantly elevated hearing thresholds at 4,000 and 8,000 Hz compared to controls.
- Significantly increased latencies were observed for wave V and I-V interpeak in PD patients.
- No significant age differences were found between the PD group and the control group.
Conclusions:
- Pure tone audiometry and brainstem auditory evoked potentials are sensitive measures for detecting auditory pathway alterations in Parkinson's disease.
- These findings suggest that auditory processing deficits are present in individuals with PD.
- Further research is warranted to explore the clinical implications of these auditory changes in PD management.
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