Clinical Applications for Time-Compressed Speech Tests

NCT00371839 | Completed Results

• 1 other identifier: C4338-R
• Study Type: interventional
• Target: 78
• Locations: 0 countries
• Sites: N/A

Brief Summary

The purpose of this study is to determine the effects of age-related cognitive changes on hearing aid benefit based on hearing aid compression time constants. The hypothesis is that people with poor working memory skills will benefit from slow time constants in hearing aid compression while those with good working memory skills will be able to benefit from more sophisticated compression algorithms with rapid time constants.

Conditions

Hearing Loss

Keywords

Hearing Loss; Hearing Aids; Rehabilitation of hearing impaired

Outcome Measures

Primary Outcomes (1)

• Ability to Understand Speech in Noise Background

  Measure speech perception for sentences in background noise

  one year

Study Arms (3)

Mild Hearing Loss

ACTIVE COMPARATOR

Audiological Evaluation will show average hearing threshold at 500, 1000, 2000, and 4000 Hz of 20-39 decibels hearing level (dBHL)

Procedure: Audiological Evaluation

Moderate Hearing Loss

ACTIVE COMPARATOR

Audiological Evaluation will show average hearing threshold at 500, 1000, 2000, and 4000 Hz of 40-49 decibels hearing level (dBHL)

Procedure: Audiological Evaluation

Moderate-Severe Hearing Loss

ACTIVE COMPARATOR

Audiological Evaluation will show average hearing threshold at 500, 1000, 2000, and 4000 Hz greater than 50 decibels hearing level (dBHL)

Procedure: Audiological Evaluation

Interventions

Audiological Evaluation PROCEDURE

Tests of hearing, cognition, and speech perception

Mild Hearing Loss; Moderate Hearing Loss; Moderate-Severe Hearing Loss

Eligibility Criteria

• Age: 50 Years - 75 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Participants will be 50 to 75 years old.
• Hearing loss will be limited to 40 dB HL from 250 Hz through 1000 Hz, and to 60 dB HL through 4000 Hz.
• Hearing loss must be greater than 25 dB at two or more frequencies from 250 to 4000 Hz.

You may not qualify if:

• None of the participants will be current or past hearing aid users; all will be free of ear disease.
• Participants with conductive hearing losses, defined as air-bone gap greater than 15 dB, will be excluded.
• The audiometric battery with acoustic reflex thresholds and decay measurements will be used to exclude anyone with evidence of a central disorder or a pathology other than a sensorineural loss. Those potential participants will be referred to a medical professional.

Sponsors & Collaborators

• US Department of Veterans Affairs: lead

Related Links

• This is the web page of the VA research Center where the study took place

MeSH Terms

Conditions

Hearing Loss

Condition Hierarchy (Ancestors)

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

Results Point of Contact

• Title: Dr. Marjorie R. Leek
• Organization: Portland VAMC

Marjorie.Leek@va.gov

(909)825-7084

Study Officials

• Marjorie R. Leek, PhD

  VA Loma Linda Healthcare System, Loma Linda, CA

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: FED
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: August 31, 2006
• First Posted: September 4, 2006
• Study Start: September 1, 2006
• Primary Completion: December 1, 2010
• Study Completion: December 1, 2011
• Last Updated: December 8, 2014
• Results First Posted: November 19, 2014

Record last verified: 2014-11