NCT02698787

Fundamental Asynchronous Stimulus Timing Sound Coding Study

Investigation of the FAST Sound Coding Strategy in Newly Implanted Adult Cochlear Implant Recipients

• Status: Completed
• Phase: —
• Study type: Interventional
• Enrollment: 11 (actual)
• Sponsor: Cochlear · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The Fundamental Asynchronous Stimulus Timing (FAST) is a novel cochlear implant sound coding strategy. Potential benefits include improved battery life, in addition to improved localization for bilateral patients.

Detailed description

The Fundamental Asynchronous Stimulus Timing (FAST) strategy offers excellent potential as a low power alternative coding strategy to the current default strategy in Nucleus® cochlear implants, Advanced Combination Encoder (ACE). Additionally, FAST offers potential bilateral benefits - localization and listening in spatially separated noise - because it has been shown in acute, controlled studies to provide more access to interaural timing difference (ITD) cues (Smith, 2010).Previous research with experienced cochlear-implant recipients has shown issues with conversion from ACE to FAST. The FAST strategy typically sounds very different in quality, and acclimatization can be lengthy. This extended adaptation time makes it difficult to show conclusively that FAST is non-inferior to ACE for speech understanding. A potential barrier to evaluating performance with FAST in current cochlear-implant recipients is the extensive amount of prior experience that many recipients have using ACE. Hence, there is a distinct need to evaluate FAST in newly implanted recipients.

Conditions

• Sensorineural Hearing Loss

Interventions

Type	Name	Description
DEVICE	Experimental sound coding strategy (FAST)	Commercially available Cochlear™ Nucleus® CI24RE with Contour Advance™ Electrode or Cochlear™ Nucleus® CI512 cochlear implant with FAST sound coding strategy using crossover design in newly implanted subjects. Both groups will receive the experimental and control strategy
DEVICE	Commercially available ACE sound coding strategy	Commercially available Cochlear™ Nucleus® CI24RE with Contour Advance™ Electrode or Cochlear™ Nucleus® CI512 cochlear implant with FAST sound coding strategy using crossover design in newly implanted subjects. Both groups will receive the experimental and control strategy

Timeline

• Start date: 2015-12-01
• Primary completion: 2018-11-19
• Completion: 2018-11-19
• First posted: 2016-03-04
• Last updated: 2021-02-02
• Results posted: 2021-02-02

Locations

1 site across 1 country: United States