Speech Perception in Bimodal Hearing

NCT05599165 | Completed

• 2 other identifiers: 10012621R15DC019240-01A1
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

The protocol has two aims; Aim 1 involves two experiments and Aim 2 involves three experiments. Under Aim 1, the investigator will identify that the frequency and time ranges of consonants produce consonant enhancement (i.e., "target frequency range" and "target time range", respectively), and that the frequency and time ranges of consonants cause consonant confusions (i.e., "conflicting frequency range" and "conflicting time range", respectively). Aim 2 tests the effects of the frequency and time ranges, identified through Aim 1 on consonant recognition with each of the four signal processing conditions: no signal processing (i.e., control condition), the target frequency and time ranges intensified alone, the conflicting frequency and time ranges suppressed alone, and both target range intensification and conflicting range suppression.

Conditions

Hearing Loss, Sensorineural

Outcome Measures

Primary Outcomes (1)

• Bimodal benefit in percent correct scores for consonant perception with three signal processing conditions

  Percent correct scores, ranging from minimum 0% to maximum 100% in consonant perception scores will be compared under three signal processing conditions: (1) when no signal processing is applied to consonants (baseline), (2) when the target frequency and time ranges responsible for consonant perception are intensified, and (3) when the conflicting frequency and time ranges causing consonant confusions are removed. Higher percent correct scores mean a better outcome.

  24 weeks

Study Arms (1)

signal processing on consonant recognition

EXPERIMENTAL

The effects of the three processing schemes on consonant enhancement will be measured. The results will be compared with two signal processing schemes: target-cue signal processing, and combined target and conflict-cue signal processing.

Other: signal processing on consonant recognition

Interventions

signal processing on consonant recognition OTHER

Consonant recognition will be measured in noise without any signal processing.

signal processing on consonant recognition

Eligibility Criteria

• Age: 18 Years - 74 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• The proposed work requires the following qualifications to be met:
• be age from 18-74 years old,
• be native speakers of American English,
• be post-lingually deafened in both ears,
• be healthy enough to manipulate a computer mouse and read information on a computer monitor, and
• have at least 1-year of bimodal use prior to initiation of study participation to account for continuous improvement.

Sponsors & Collaborators

• Baylor University: lead
• Baylor Scott and White Health: collaborator
• National Institute on Deafness and Other Communication Disorders (NIDCD): collaborator

Study Sites (1)

Baylor University

Waco, Texas, 76798, United States

Location

MeSH Terms

Conditions

Hearing Loss, Sensorineural

Condition Hierarchy (Ancestors)

Hearing Loss; Hearing Disorders; Ear Diseases; Otorhinolaryngologic Diseases; Sensation Disorders; Neurologic Manifestations; Nervous System Diseases; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Yang-Soo Yoon, PhD

  Baylor University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: A single group of bimodal cochlear implant users will be tested with three different signal processing for consonant enhancement in noise.

Study Record Dates

• First Submitted: October 12, 2022
• First Posted: October 31, 2022
• Study Start: October 25, 2021
• Primary Completion: July 31, 2025
• Study Completion: July 31, 2025
• Last Updated: October 21, 2025

Record last verified: 2025-10

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)