The Gaps-in-Noise Test: Gap Detection Thresholds in Normal-Hearing Young Adults

Completed

• Conditions: Auditory Perception; Psychoacoustics

• Registration Number: NCT00593788
• Lead Sponsor: University of Sao Paulo

Brief Summary

The aim of this study was to establish parameters for the Gaps-in-Noise test in normal-hearing young adults. One hundred subjects (50 males and 50 females) received an audiological evaluation to rule out hearing loss and auditory processing disorder. The Gaps-in-Noise test was then conducted on all subjects. The mean gap detection threshold was 4.19 msec. A psychometric function by gap duration was constructed, revealing that the percentage of correct responses was less than or equal to 5% for a gap duration of 2 msec, 10-30% for a gap duration of 3 msec, 60-70% for a gap duration of 4 msec, and over 96% for gap durations of 5 msec or longer. The results suggest that the data obtained can be applied as reference values for future testing. In the subjects evaluated, the Gaps-in-Noise test proved to be consistent with low variability.

Detailed Description

Not available

Study Timeline

• Study Start: 2003-03
• Primary Completion: 2004-06
• Study Completion: 2004-06
• Status Verified: 2008-01
• Study First Submitted: 2008-01-03
• Study First Submitted QC: 2008-01-14
• Last Update Submitted: 2008-01-14
• Study First Posted: 2008-01-15
• Last Update Posted: 2008-01-15

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

Subject inclusion criteria were:

• all of the subjects have to have auditory thresholds lower than 20 dB HL at all of the frequencies evaluated (octave frequencies between 0.25 to 8 kHz), bilaterally;
• type A tympanometric curves with presented ipsilateral and contralateral acoustic reflexes;
• 95% or higher correct responses for each ear in the dichotic digit test.

Subject inclusion criteria also included negative histories for audiologic, otologic, head trauma, and neurologic involvement.

Exclusion Criteria

• Hearing loss;
• Auditory processing disorder;
• Histories of audiologic, otologic, head trauma, and neurologic involvement.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
gap detection test	half hour

Trial Locations

Locations (1)

University of Sao Paulo; 🇧🇷 Sao Paulo, Brazil