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

NCT ID: NCT00593788

Last Updated: 2008-01-15

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 100 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2003-03-31
• Study Completion Date: 2004-06-30

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.

Conditions

Auditory Perception; Psychoacoustics

Study Design

• Observational Model Type: CASE_ONLY
• Study Time Perspective: PROSPECTIVE

Study Groups

1

Normal-hearing adults between 18 and 31 years of age.

No interventions assigned to this group

Eligibility Criteria

Inclusion Criteria

• 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.

Exclusion Criteria

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

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 31 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Sao Paulo

OTHER

Sponsor Role: lead

Responsible Party

University of Sao Paulo

Principal Investigators

alessandra G. Samelli, Doctor

Role: PRINCIPAL_INVESTIGATOR

Guarulhos University

Locations

University of Sao Paulo

São Paulo, São Paulo, Brazil

Countries

Brazil

Other Identifiers

113/02 de 03/13/2002

Identifier Type: -

Identifier Source: secondary_id

113 / 02

Identifier Type: -

Identifier Source: org_study_id