This study tested the hypotheses that (1) adolescents with cochlear implants (CIs) experience impaired spectral processing abilities, and (2) those impaired spectral processing abilities constrain acquisition of skills based on sensitivity to phonological structure but not those based on lexical or syntactic (lexicosyntactic) knowledge. To test these hypotheses, spectral modulation detection (SMD) thresholds were measured for 14-year-olds with normal hearing (NH) or CIs. Three measures each of phonological and lexicosyntactic skills were obtained and used to generate latent scores of each kind of skill. Relationships between SMD thresholds and both latent scores were assessed. Mean SMD threshold was poorer for adolescents with CIs than for adolescents with NH. Both latent lexicosyntactic and phonological scores were poorer for the adolescents with CIs, but the latent phonological score was disproportionately so. SMD thresholds were significantly associated with phonological but not lexicosyntactic skill for both groups. The only audiologic factor that also correlated with phonological latent scores for adolescents with CIs was the aided threshold, but it did not explain the observed relationship between SMD thresholds and phonological latent scores. Continued research is required to find ways of enhancing spectral processing for children with CIs to support their acquisition of phonological sensitivity.
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September 2021
September 23 2021
The contribution of spectral processing to the acquisition of phonological sensitivity by adolescent cochlear implant users and normal-hearing controlsa) Available to Purchase
Susan Nittrouer;
Susan Nittrouer
b)
Department of Speech, Language, and Hearing Sciences, University of Florida
, Gainesville, Florida 32610, USA
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Joanna H. Lowenstein;
Joanna H. Lowenstein
Department of Speech, Language, and Hearing Sciences, University of Florida
, Gainesville, Florida 32610, USA
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Donal G. Sinex
Donal G. Sinex
Department of Speech, Language, and Hearing Sciences, University of Florida
, Gainesville, Florida 32610, USA
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Susan Nittrouer
b)
Department of Speech, Language, and Hearing Sciences, University of Florida
, Gainesville, Florida 32610, USA
Joanna H. Lowenstein
Department of Speech, Language, and Hearing Sciences, University of Florida
, Gainesville, Florida 32610, USA
Donal G. Sinex
Department of Speech, Language, and Hearing Sciences, University of Florida
, Gainesville, Florida 32610, USA
b)
Electronic mail: [email protected]
a)
Portions of these data were presented in “Spectral modulation detection in adolescents with normal hearing or cochlear implants predicts some language skills, but not others,” 176th meeting of the Acoustical Society of America, Victoria, British Columbia, Canada, November 2018.
J. Acoust. Soc. Am. 150, 2116–2130 (2021)
Article history
Received:
May 20 2021
Accepted:
September 01 2021
Citation
Susan Nittrouer, Joanna H. Lowenstein, Donal G. Sinex; The contribution of spectral processing to the acquisition of phonological sensitivity by adolescent cochlear implant users and normal-hearing controls. J. Acoust. Soc. Am. 1 September 2021; 150 (3): 2116–2130. https://doi.org/10.1121/10.0006416
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