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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Psychoacoustic dynamic range and cochlear implant speech-perception performance in nucleus 22 users.
Ricardo Ferreira Bento1, Rubens Vuono De Brito Neto, Arthur Menino Castilho
1Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil. rbento@attglobal.net
Cochlear Implants International
|September 16, 2008
Summary
Cochlear implant users with better speech perception showed less variability in their electrical dynamic range. Understanding these dynamic ranges aids in programming cochlear implants for children.
Area of Science:
- Audiology
- Biomedical Engineering
- Neuroscience
Background:
- Cochlear implant speech processors reduce wide acoustic dynamic ranges to narrower electrical dynamic ranges.
- Individual variations in electrical dynamic range correlate with speech perception performance.
- Characterizing psycho-acoustical dynamic range in adults informs pediatric cochlear implant programming.
Purpose of the Study:
- To analyze the electrical dynamic ranges of Nucleus 22 cochlear implant users.
- To compare dynamic ranges between patients with good and poor speech perception.
Main Methods:
- Analysis of 31 Nucleus 22 cochlear implant maps in adult subjects.
- Subjects used the SPEAK processing strategy with bipolar stimulation.
- Participants were divided into good (>80% sentence perception) and poor (<70% sentence perception) speech perception groups.
Main Results:
- Both groups exhibited wide electrical dynamic ranges, averaging 50 units.
- No significant difference in the average width of dynamic range was found between the groups.
Conclusions:
- Electrical dynamic range variability exists among cochlear implant users and electrodes.
- Lower variability in electrical dynamic range was observed in patients with superior speech perception.