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

Auditory Perception Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00593788
• Other study ID #: 113 / 02
• Secondary ID: 113/02 de 03/13/
• Status: Completed
• Phase: N/A
• First received: January 3, 2008
• Last updated: January 14, 2008
• Start date: March 2003
• Est. completion date: June 2004

Study information

• Verified date: January 2008
• Source: University of Sao Paulo
• Contact: n/a
• Is FDA regulated: No
• Health authority: Brazil: National Committee of Ethics in Research
• Study type: Observational

Clinical Trial 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 100
• Est. completion date: June 2004
• Est. primary completion date: June 2004
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years to 31 Years

Eligibility

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

Observational Model: Case-Only, Time Perspective: Prospective

Related Conditions & MeSH terms

• Auditory Perception
• Psychoacoustics

Locations

Country	Name	City	State
Brazil	University of Sao Paulo	Sao Paulo

Sponsors (1)

Lead Sponsor	Collaborator
University of Sao Paulo

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	gap detection test		half hour	No