Cochlear Implant Low Power Strategy

Not Applicable

Completed

• Conditions: Hearing Loss
• Interventions: Device: MP3000 sound coding strategy or ACE strategy with lower stimulation

• Registration Number: NCT02879539
• Lead Sponsor: The Hearing Cooperative Research Centre

Brief Summary

Reducing power consumption in the cochlear implant is crucial to the development of future smaller sound processors. The commercial MP3000 sound coding strategy has been shown to be more efficient in power consumption to the standard ACE strategy. However in order to develop smaller sound processors, further battery life power savings are required. The aim of this study is to evaluate three experimental sets of MP3000 parameter sets, compared against the default ACE program. In the background for each of the four strategies, experimental noise reduction programs (SpatialNR and NR3) will also be in use. In an additional phase of the study, low stimulation rate ACE programs will also be evaluated against the default stimulation rate.

Detailed Description

Not available

Study Timeline

• Study Start: 2015-03-31
• Study First Submitted: 2016-08-21
• Study First Submitted QC: 2016-08-21
• Study First Posted: 2016-08-25
• Primary Completion: 2017-01-27
• Study Completion: 2017-01-27
• Status Verified: 2021-07
• Last Update Submitted: 2021-07-02
• Last Update Posted: 2021-07-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 32

Inclusion Criteria

1. Adult (>18 years) cochlear implant recipients
2. Implanted with the CI500, CI24RE and Nucleus 24 Series and CI422 cochlear implants.
3. User of commercially available Freedom, CP810 or CP900 series sound processor
4. User of the ACE strategy or MP3000 strategy
5. At least 3 months experience with the cochlear implant
6. Native speaker in the language used to assess speech perception performance
7. Willingness to participate in and to comply with all requirements of the protocol

Exclusion Criteria

1. Additional handicaps that would prevent participation in evaluations
2. Unrealistic expectations on the part of the subject, regarding the possible benefits, risks and limitations that are inherent to the procedure and investigational device

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
MP3000-ACE strategy	MP3000 sound coding strategy or ACE strategy with lower stimulation	MP3000 sound coding strategy or ACE strategy with lower stimulation rate

Primary Outcome Measures

Name	Time	Method
Word recognition scores in quiet	Testing over 18 weeks	Word recognition scores in quiet for i) MP3000 strategy compared to default ACE strategy and ii) lower rate stimulation for ACE strategy
Sentence recognition scores in quiet	Testing over 18 weeks	Sentence recognition scores in quiet for i) MP3000 strategy compared to ACE strategy and ii) lower rate stimulation for ACE strategy

Secondary Outcome Measures

Name	Time	Method
Fundamental frequency (F0) discrimination	Testing over 18 weeks	F0 discrimination for MP3000 strategy compared to the ACE baseline
Speech intelligibility and helpfulness subjective ratings	Testing over 18 weeks	For MP3000 strategy compared to the default ACE baseline
Sentence in noise scores	Testing over 18 weeks	Comparison of MP3000 program with Spatial NR and NR3 enabled versus disabled.

Trial Locations

Locations (1)

The HEARing CRC; 🇦🇺 Melbourne, Victoria, Australia