---
title: "The Gaps-in-Noise Test: Gap Detection Thresholds in Normal-Hearing Young Adults"
nct_id: NCT00593788
overall_status: COMPLETED
sponsor: University of Sao Paulo
study_type: OBSERVATIONAL
primary_condition: Auditory Perception
countries: Brazil
canonical_url: "https://parkinsonspathways.com/agent/trials/NCT00593788.md"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT00593788"
ct_last_update_post_date: 2008-01-15
last_seen_at: "2026-05-12T07:01:21.785Z"
source: ClinicalTrials.gov (mirrored, no enrichment)
---
# The Gaps-in-Noise Test: Gap Detection Thresholds in Normal-Hearing Young Adults

**NCT ID:** [NCT00593788](https://clinicaltrials.gov/study/NCT00593788)

## Key Facts

- **Status:** COMPLETED
- **Study Type:** OBSERVATIONAL
- **Target Enrollment:** 100
- **Lead Sponsor:** University of Sao Paulo
- **Conditions:** Auditory Perception, Psychoacoustics
- **Start Date:** 2003-03
- **Completion Date:** 2004-06
- **CT.gov Last Update:** 2008-01-15

## 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.

## Eligibility

- **Minimum age:** 18 Years
- **Maximum age:** 31 Years
- **Sex:** ALL
- **Healthy Volunteers:** Yes

```
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.
```

## Arms

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

## Primary Outcomes

- **gap detection test** _(time frame: half hour)_

## Locations (1)

- University of Sao Paulo, São Paulo, São Paulo, Brazil

## Recent Field Changes (last 30 days)

- `status.overallStatus` — added _(2026-05-12)_
- `status.primaryCompletionDate` — added _(2026-05-12)_
- `status.completionDate` — added _(2026-05-12)_
- `status.lastUpdatePostDate` — added _(2026-05-12)_
- `design.enrollmentCount` — added _(2026-05-12)_
- `eligibility.criteria` — added _(2026-05-12)_
- `eligibility.minAge` — added _(2026-05-12)_
- `eligibility.maxAge` — added _(2026-05-12)_
- `eligibility.sex` — added _(2026-05-12)_
- `outcomes.primary` — added _(2026-05-12)_
- `armsInterventions.arms` — added _(2026-05-12)_
- `sponsor.lead` — added _(2026-05-12)_
- `results.hasResults` — added _(2026-05-12)_
- `locations.university of sao paulo|são paulo|são paulo|brazil` — added _(2026-05-12)_

---

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*Source data (authoritative): https://clinicaltrials.gov/study/NCT00593788*  
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