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Auditory steady-state response in cochlear implant patients.
Alejandro Torres-Fortuny1, Isabel Arnaiz-Marquez1, Heivet Hernández-Pérez2
1Audiology Department, Cuban Neuroscience Center, Havana, Cuba.
Acta Otorrinolaringologica Espanola
|March 24, 2018
Summary
Auditory steady-state response is a suitable method for determining hearing thresholds in cochlear implant patients. This objective technique provides reliable electrophysiological thresholds, confirming its clinical utility.
Area of Science:
- Audiology
- Neuroscience
- Biomedical Engineering
Background:
- Auditory steady-state responses (ASSR) offer a potential objective audiometry alternative for cochlear implant (CI) users.
- Assessing hearing thresholds in CI patients is crucial for device programming and rehabilitation.
Purpose of the Study:
- To determine physiological hearing thresholds using ASSR with acoustic stimulation in free-field conditions for Clarion HiRes 90K CI patients.
- To validate the biological origin and clinical feasibility of ASSR in this population.
Main Methods:
- Eleven subjects with Clarion HiRes 90K cochlear implants participated.
- Four amplitude-modulated tones (500, 1000, 2000, 4000 Hz) were used with the multiple frequency technique.
- Recordings included ASSR at 0 dB HL, non-specific stimuli, and masking techniques.
Main Results:
- Electrophysiological thresholds were successfully obtained for all subjects.
- No ASSR were detected at 0 dB HL or with non-specific stimuli.
- Masking thresholds were obtainable, showing differences between behavioral and electrophysiological thresholds (-6±16, -2±13, 0±22, -8±18 dB at 500, 1000, 2000, 4000 Hz).
Conclusions:
- Auditory steady-state response is a viable and suitable technique for evaluating hearing thresholds in cochlear implant recipients.
- The study confirms the biological origin and practical application of ASSR for objective audiometry in this patient group.
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