Abstract
Introduction
Children with auditory processing disorder (APD) exhibit various auditory processing
deficits, including temporal processing deficits. Temporal processing abilities are
assessed by estimating the gap detection threshold (GDT) as the lowest perceivable
gap duration identified by the subject.
Objective
The present study attempted to examine the performance of normal-hearing children
and children with APD using adaptive within-channel and across-channel gap detection
tests.
Methods
Two groups of children aged between 10 and 12 years participated in the study. Group
1 included children diagnosed with APD, and group 2 included normal hearing, typically
developing children (TD), with 12 participants in each group. For each subject, the
lowest detectable gap duration was obtained monoaurally, using broadband noise (BBN),
within-channel (narrow bands of noise centered spectrally at 2 kHz on either side
of the gap), and across-channel (narrow bands of noise leading marker spectrally centered
at 2 kHz and trailer marker spectrally centered at 1 kHz) gap detection tests through
the Psycon platform (free).
Results
The results of the statistical analysis revealed significant group differences only
in across-channel GDT measures between the two groups. In contrast, there were no
statistically significant differences between the groups in terms of either within-channel
GDT or BBN GDT.
Conclusion
The results indicate that, compared to other stimuli, an across-channel gap detection
test would be a better diagnostic test of temporal resolution to identify and assess
children with APD.
Keywords
auditory processing disorders - gap detection - temporal resolution - adaptive threshold
procedures - across-channel temporal gap detection
Bibliographical Record
Chandni Jain, Kishore Tanniru, Gayathri Kalarikkal. Performance of Children with and
without Auditory Processing Disorders in Adaptive Temporal Gap Detection Measures.
Int Arch Otorhinolaryngol 2025; 29: s00451804517.
DOI: 10.1055/s-0045-1804517
