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

This study has been completed.
Information provided by:
University of Sao Paulo Identifier:
First received: January 3, 2008
Last updated: January 14, 2008
Last verified: January 2008
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.

Auditory Perception

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: The Gaps-in-Noise Test: Gap Detection Thresholds in Normal-Hearing Young Adults

Resource links provided by NLM:

Further study details as provided by University of Sao Paulo:

Primary Outcome Measures:
  • gap detection test [ Time Frame: half hour ]

Enrollment: 100
Study Start Date: March 2003
Study Completion Date: June 2004
Primary Completion Date: June 2004 (Final data collection date for primary outcome measure)
Normal-hearing adults between 18 and 31 years of age.


Ages Eligible for Study:   18 Years to 31 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Normal-hearing adults between 18 and 31 years of age were evaluated, including 50 males (mean age 24.72 years) and 50 females (mean age 23.77 years). The youngest male subject was 18 years old, and the youngest female subject was 18.16 years old. In contrast, the oldest male subject was 31.5 years old, and the oldest female subject was 31.83 years old. All of the participants in the study were students or employees of the University of Guarulhos.

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.
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Please refer to this study by its identifier: NCT00593788

University of Sao Paulo
Sao Paulo, Brazil
Sponsors and Collaborators
University of Sao Paulo
Principal Investigator: alessandra G. Samelli, Doctor Guarulhos University
  More Information

Responsible Party: Samelli, Alessandra Giannella, University of Sao Paulo Identifier: NCT00593788     History of Changes
Other Study ID Numbers: 113 / 02
113/02 de 03/13/2002
Study First Received: January 3, 2008
Last Updated: January 14, 2008

Keywords provided by University of Sao Paulo:
GIN test
gap detection
temporal resolution
auditory perception
psychoacoustics processed this record on April 26, 2017