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This study established normative values for gap detection thresholds (GDTs) in young Saudi adults using a computer program. Findings suggest distinct auditory processing for different noise conditions, highlighting the program

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Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Speech and Hearing Sciences

Background:

  • Auditory temporal resolution is crucial for speech perception and understanding.
  • Gap detection thresholds (GDTs) quantify the shortest silent interval listeners can detect.
  • Normative data for GDTs in specific populations and conditions are essential for clinical assessment.

Purpose of the Study:

  • To determine normative gap detection thresholds (GDTs) in young Saudi adults.
  • To evaluate an adaptive computer-based program for measuring GDTs.
  • To investigate GDTs across three distinct auditory stimulus conditions.

Main Methods:

  • A within-subjects design was employed with 27 normal-hearing young Saudi adults.
  • GDTs were measured using adaptive auditory tasks in broadband noise (BBN), narrowband noise within-channel (NBN WC), and narrowband noise across-channel (NBN AC).
  • Data were collected between April 2017 and April 2018 at King Saud University.

Main Results:

  • Mean GDTs were 3.19 msec for BBN, 14.53 msec for NBN WC, and 29.71 msec for NBN AC.
  • Results align with previous studies using different methodologies.
  • No significant correlations were found between GDTs across the three stimulus conditions.

Conclusions:

  • The computer-based experimental program is a reliable tool for estimating GDTs.
  • The lack of correlation across conditions suggests distinct neural processes underlie temporal gap perception.
  • Findings provide valuable normative data for auditory temporal resolution in young Saudi adults.