Cargando…
Within- and across-frequency temporal processing and speech perception in cochlear implant users
OBJECTIVE: Cochlear implant (CI) recipient’s speech perception performance is highly variable and is influenced by temporal processing abilities. Temporal processing is commonly assessed using a behavioral task that requires the participant to detect a silent gap with the pre- and post-gap stimuli o...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9560480/ https://www.ncbi.nlm.nih.gov/pubmed/36227872 http://dx.doi.org/10.1371/journal.pone.0275772 |
_version_ | 1784807756139593728 |
---|---|
author | Blankenship, Chelsea M. Meinzen-Derr, Jareen Zhang, Fawen |
author_facet | Blankenship, Chelsea M. Meinzen-Derr, Jareen Zhang, Fawen |
author_sort | Blankenship, Chelsea M. |
collection | PubMed |
description | OBJECTIVE: Cochlear implant (CI) recipient’s speech perception performance is highly variable and is influenced by temporal processing abilities. Temporal processing is commonly assessed using a behavioral task that requires the participant to detect a silent gap with the pre- and post-gap stimuli of the same frequency (within-frequency gap detection) or of different frequencies (across-frequency gap detection). The purpose of the study was to evaluate behavioral and electrophysiological measures of within- and across-frequency temporal processing and their correlations with speech perception performance in CI users. DESIGN: Participants included 11 post-lingually deafened adult CI users (n = 15 ears; Mean Age = 50.2 yrs) and 11 age- and gender-matched normal hearing (NH) individuals (n = 15 ears; Mean Age = 49.0 yrs). Speech perception was assessed with Consonant-Nucleus-Consonant Word Recognition (CNC), Arizona Biomedical Sentence Recognition (AzBio), and Bamford-Kowal-Bench Speech-in-Noise Test (BKB-SIN) tests. Within- and across-frequency behavioral gap detection thresholds (referred to as the GDT(within) and GDT(across)) were measured using an adaptive, two-alternative, forced-choice procedure. Cortical auditory evoked potentials (CAEPs) were elicited using within- and across-frequency gap stimuli under four gap duration conditions (no gap, GDT, sub-threshold GDT, and supra-threshold GDT). Correlations among speech perception, GDTs, and CAEPs were examined. RESULTS: CI users had poorer speech perception scores compared to NH listeners (p < 0.05), but the GDTs were not different between groups (p > 0.05). Compared to NH peers, CI users showed increased N1 latency in the CAEPs evoked by the across-frequency gap stimuli (p < 0.05). No group difference was observed for the CAEPs evoked by the within-frequency gap (p > 0.05). Three CI ears showing the longest GDT(within) also showed the poorest performance in speech in noise. The within-frequency CAEP increased in amplitude with the increase of gap duration; while the across-frequency CAEP displayed a similar amplitude for all gap durations. There was a significant correlation between speech scores and within-frequency CAEP measures for the supra-threshold GDT condition, with CI users with poorer speech performance having a smaller N1-P2 amplitude and longer N1 latency. No correlations were found among GDT(across), speech perception, and across-frequency CAEP measures. CONCLUSIONS: Within- and across-frequency gap detection may involve different neural mechanisms. The within-frequency gap detection task can help identify CI users with poor speech performance for rehabilitation. The within-frequency CAEP is a better predictor for speech perception performance than the across-frequency CAEP. |
format | Online Article Text |
id | pubmed-9560480 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-95604802022-10-14 Within- and across-frequency temporal processing and speech perception in cochlear implant users Blankenship, Chelsea M. Meinzen-Derr, Jareen Zhang, Fawen PLoS One Research Article OBJECTIVE: Cochlear implant (CI) recipient’s speech perception performance is highly variable and is influenced by temporal processing abilities. Temporal processing is commonly assessed using a behavioral task that requires the participant to detect a silent gap with the pre- and post-gap stimuli of the same frequency (within-frequency gap detection) or of different frequencies (across-frequency gap detection). The purpose of the study was to evaluate behavioral and electrophysiological measures of within- and across-frequency temporal processing and their correlations with speech perception performance in CI users. DESIGN: Participants included 11 post-lingually deafened adult CI users (n = 15 ears; Mean Age = 50.2 yrs) and 11 age- and gender-matched normal hearing (NH) individuals (n = 15 ears; Mean Age = 49.0 yrs). Speech perception was assessed with Consonant-Nucleus-Consonant Word Recognition (CNC), Arizona Biomedical Sentence Recognition (AzBio), and Bamford-Kowal-Bench Speech-in-Noise Test (BKB-SIN) tests. Within- and across-frequency behavioral gap detection thresholds (referred to as the GDT(within) and GDT(across)) were measured using an adaptive, two-alternative, forced-choice procedure. Cortical auditory evoked potentials (CAEPs) were elicited using within- and across-frequency gap stimuli under four gap duration conditions (no gap, GDT, sub-threshold GDT, and supra-threshold GDT). Correlations among speech perception, GDTs, and CAEPs were examined. RESULTS: CI users had poorer speech perception scores compared to NH listeners (p < 0.05), but the GDTs were not different between groups (p > 0.05). Compared to NH peers, CI users showed increased N1 latency in the CAEPs evoked by the across-frequency gap stimuli (p < 0.05). No group difference was observed for the CAEPs evoked by the within-frequency gap (p > 0.05). Three CI ears showing the longest GDT(within) also showed the poorest performance in speech in noise. The within-frequency CAEP increased in amplitude with the increase of gap duration; while the across-frequency CAEP displayed a similar amplitude for all gap durations. There was a significant correlation between speech scores and within-frequency CAEP measures for the supra-threshold GDT condition, with CI users with poorer speech performance having a smaller N1-P2 amplitude and longer N1 latency. No correlations were found among GDT(across), speech perception, and across-frequency CAEP measures. CONCLUSIONS: Within- and across-frequency gap detection may involve different neural mechanisms. The within-frequency gap detection task can help identify CI users with poor speech performance for rehabilitation. The within-frequency CAEP is a better predictor for speech perception performance than the across-frequency CAEP. Public Library of Science 2022-10-13 /pmc/articles/PMC9560480/ /pubmed/36227872 http://dx.doi.org/10.1371/journal.pone.0275772 Text en © 2022 Blankenship et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Blankenship, Chelsea M. Meinzen-Derr, Jareen Zhang, Fawen Within- and across-frequency temporal processing and speech perception in cochlear implant users |
title | Within- and across-frequency temporal processing and speech perception in cochlear implant users |
title_full | Within- and across-frequency temporal processing and speech perception in cochlear implant users |
title_fullStr | Within- and across-frequency temporal processing and speech perception in cochlear implant users |
title_full_unstemmed | Within- and across-frequency temporal processing and speech perception in cochlear implant users |
title_short | Within- and across-frequency temporal processing and speech perception in cochlear implant users |
title_sort | within- and across-frequency temporal processing and speech perception in cochlear implant users |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9560480/ https://www.ncbi.nlm.nih.gov/pubmed/36227872 http://dx.doi.org/10.1371/journal.pone.0275772 |
work_keys_str_mv | AT blankenshipchelseam withinandacrossfrequencytemporalprocessingandspeechperceptionincochlearimplantusers AT meinzenderrjareen withinandacrossfrequencytemporalprocessingandspeechperceptionincochlearimplantusers AT zhangfawen withinandacrossfrequencytemporalprocessingandspeechperceptionincochlearimplantusers |