Authors
Zilong Xie
Published in
The Journal of the Acoustical Society of America. Volume 158. Issue 1. Pages 317-328. Jul 01, 2025.
Abstract
Sensitivity to temporal cues in word segments decreases when preceded by carrier sentences in acoustic and electric hearing, compared to isolated target words. This study examined the extent to which the carrier sentence effect is driven by speech-specific mechanisms or general auditory processes in normal-hearing listeners and cochlear implant simulations. A secondary objective was to determine the relative contributions of peripheral and central processes. Participants completed phonemic categorization tasks on unprocessed and vocoded versions of a Buy/Pie word contrast with varying voice-onset times (VOTs). Carrier sentences and spectrally matched non-speech carriers were presented to either the same or a different ear than the target words. Presenting stimuli to different ears minimizes peripheral contributions. Results revealed that in the same-ear condition, sensitivity to VOT cues was reduced for unprocessed and vocoded stimuli across all carrier conditions compared to isolated target words. Notably, the reduction in sensitivity to VOT cues with non-speech carriers was comparable to or even greater than with carrier sentences. In contrast, no reduction in VOT sensitivity was observed in the different-ear condition following carrier stimuli. These findings suggest that general auditory processes, likely at peripheral levels, play a major role in the carrier sentence effect on temporal processing.
PMID:
40644585
Bibliographic data and abstract were imported from PubMed on 12 Jul 2025.
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