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Within-patient longitudinal speech reception measures with continuous interleaved sampling processors for ineraid
M Pelizzone1, G Cosendai, J Tinembart
1Department of Otolaryngology-Head and Neck Surgery, Cantonal University Hospital, Geneva, Switzerland.
Ear and Hearing
|July 1, 1999
Summary
Continuous interleaved sampling (CIS) cochlear implant processors significantly improve speech reception over time, with optimal results after 4-6 months of use. Ineraid users may benefit greatly from this advanced technology.
Area of Science:
- Audiology
- Biomedical Engineering
- Neuroscience
Background:
- Cochlear implant technology has advanced significantly, with continuous interleaved sampling (CIS) offering a promising sound processing strategy.
- Understanding the long-term benefits of CIS processors for existing cochlear implant users is crucial for optimizing auditory rehabilitation.
Purpose of the Study:
- To evaluate within-subject changes in speech reception performance over one year in Ineraid cochlear implant users transitioning to CIS processors.
- To compare the long-term efficacy of CIS processors against the original Ineraid processors.
Main Methods:
- Twelve long-term Ineraid cochlear implant users were fitted with Geneva Wearable Processors using a high-rate CIS strategy (4-6 channels).
- Speech reception was assessed using consonant and vowel identification tests over a 12-month period.
- Performance was compared between CIS and Ineraid processors at baseline, after CIS adaptation, and after a period of non-use of Ineraid processors.
Main Results:
- Initial fitting showed improved consonant identification with CIS, but vowel identification remained unchanged.
- Significant improvements in both consonant and vowel identification were observed with CIS over time, reaching an asymptote after approximately 6 months.
- CIS processors demonstrated significantly superior speech reception compared to Ineraid processors at 6 months and beyond.
- Control tests confirmed that performance with Ineraid processors did not change during the CIS trial.
Conclusions:
- The full benefits of CIS sound processing strategies require a period of adaptation and daily use to be realized.
- Significant speech reception improvements are achieved with CIS processors after 4-6 months of consistent use.
- Existing Ineraid cochlear implant users are likely to experience substantial benefits from adopting CIS technology.