Spatial Release From Masking in 2-Year-Olds With Normal Hearing and With Bilateral Cochlear Implants
| Autor: | Ruth Y. Litovsky, Sara M. Misurelli, Christi Hess |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Masking (art)
bilateral cochlear implants medicine.medical_specialty Clinical settings Audiology Hearing Loss Bilateral 03 medical and health sciences Speech and Hearing 0302 clinical medicine Hearing children medicine otorhinolaryngologic diseases Humans Early activation Speech reception unmasking 030223 otorhinolaryngology business.industry Hearing Tests Age Factors Small sample Auditory Threshold lcsh:Otorhinolaryngology lcsh:RF1-547 Cochlear Implantation Cochlear Implants Otorhinolaryngology Case-Control Studies Child Preschool Group effect Speech Perception Spatial cues Original Article business human activities Perceptual Masking 030217 neurology & neurosurgery |
| Zdroj: | Trends in Hearing Trends in Hearing, Vol 22 (2018) |
| ISSN: | 2331-2165 |
| Popis: | This study evaluated spatial release from masking (SRM) in 2- to 3-year-old children who are deaf and were implanted with bilateral cochlear implants (BiCIs), and in age-matched normal-hearing (NH) toddlers. Here, we examined whether early activation of bilateral hearing has the potential to promote SRM that is similar to age-matched NH children. Listeners were 13 NH toddlers and 13 toddlers with BiCIs, ages 27 to 36 months. Speech reception thresholds (SRTs) were measured for target speech in front (0°) and for competitors that were either Colocated in front (0°) or Separated toward the right (+90°). SRM was computed as the difference between SRTs in the front versus in the asymmetrical condition. Results show that SRTs were higher in the BiCI than NH group in all conditions. Both groups had higher SRTs in the Colocated and Separated conditions compared with Quiet, indicating masking. SRM was significant only in the NH group. In the BiCI group, the group effect of SRM was not significant, likely limited by the small sample size; however, all but two children had SRM values within the NH range. This work shows that to some extent, the ability to use spatial cues for source segregation develops by age 2 to 3 in NH children and is attainable in most of the children in the BiCI group. There is potential for the paradigm used here to be used in clinical settings to evaluate outcomes of bilateral hearing in very young children. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|