Gap Detection in School-Age Children and Adults: Center Frequency and Ramp Duration Purpose The age at which gap detection becomes adultlike differs, depending on the stimulus characteristics. The present study evaluated whether the developmental trajectory differs as a function of stimulus frequency region or duration of the onset and offset ramps bounding the gap. Method Thresholds were obtained for wideband ... Research Article
Research Article  |   January 01, 2017
Gap Detection in School-Age Children and Adults: Center Frequency and Ramp Duration
 
Author Affiliations & Notes
  • Emily Buss
    Department of Otolaryngology/Head and Neck Surgery, University of North Carolina School of Medicine, Chapel Hill
  • Heather L. Porter
    Hearing and Speech Department, Children's Hospital Los Angeles, CA
  • Joseph W. Hall, III
    Department of Otolaryngology/Head and Neck Surgery, University of North Carolina School of Medicine, Chapel Hill
  • John H. Grose
    Department of Otolaryngology/Head and Neck Surgery, University of North Carolina School of Medicine, Chapel Hill
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Emily Buss: ebuss@med.unc.edu
  • Editor: Nancy Tye-Murray
    Editor: Nancy Tye-Murray×
  • Associate Editor: Todd Ricketts
    Associate Editor: Todd Ricketts×
Article Information
Hearing & Speech Perception / Acoustics / Hearing / Research Articles
Research Article   |   January 01, 2017
Gap Detection in School-Age Children and Adults: Center Frequency and Ramp Duration
Journal of Speech, Language, and Hearing Research, January 2017, Vol. 60, 172-181. doi:10.1044/2016_JSLHR-H-16-0010
History: Received January 11, 2016 , Revised May 7, 2016 , Accepted June 13, 2016
 
Journal of Speech, Language, and Hearing Research, January 2017, Vol. 60, 172-181. doi:10.1044/2016_JSLHR-H-16-0010
History: Received January 11, 2016; Revised May 7, 2016; Accepted June 13, 2016

Purpose The age at which gap detection becomes adultlike differs, depending on the stimulus characteristics. The present study evaluated whether the developmental trajectory differs as a function of stimulus frequency region or duration of the onset and offset ramps bounding the gap.

Method Thresholds were obtained for wideband noise (500–4500 Hz) with 4- or 40-ms raised-cosine ramps and for a 25-Hz-wide low-fluctuation narrowband noise centered on either 500 or 5000 Hz with 40-ms ramps. Stimuli were played continuously at 70 dB SPL, and the task was to indicate which of 3 intervals contained a gap. Listeners were 5.2- to 15.1-year-old children (n = 40) and adults (n = 10) with normal hearing.

Results Regardless of listener age, gap detection thresholds for the wideband noise tended to be lower when gaps were shaped using 4-ms rather than 40-ms ramps. Thresholds also tended to be lower for the low-fluctuation narrowband noise centered on 5000 Hz than 500 Hz. Performance reached adult levels after 11 years of age for all 4 stimuli. Maturation was not uniform across individuals, however; a subset of young children performed like adults, including some 5-year-olds.

Conclusion For these stimuli, the developmental trajectory was similar regardless of narrowband noise center frequency or wideband noise onset and offset ramp duration.

Acknowledgment
This work was supported by National Institute on Deafness and Other Communication Disorders Grant R01 DC000397 (awarded to Joseph W. Hall III).
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