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Spectral-Temporal Modulated Ripple Discrimination by Children With Cochlear Implants.
David M Landsberger1, Monica Padilla1,1, Amy S Martinez1
1Department of Otolaryngology, New York University School of Medicine, New York, New York, USA.
Ear and Hearing
|July 7, 2017
Summary
Early implanted children show poorer spectral resolution than postlingually deafened adults, suggesting cochlear implants may limit auditory development in children. This highlights differences in auditory system maturation with cochlear implant use.
Area of Science:
- Auditory Neuroscience
- Speech and Hearing Science
Background:
- Auditory system development differs between early implanted children and postlingually deafened adults.
- Cochlear implants provide auditory input during critical developmental periods for children.
Purpose of the Study:
- Compare spectral resolution abilities between prelingually deafened children and postlingually deafened adults using cochlear implants.
- Investigate the impact of early auditory deprivation and neural plasticity on auditory perception.
Main Methods:
- Utilized the Spectral-temporally Modulated Ripple Test (SMRT) to assess spectral resolution.
- Tested bilaterally cochlear-implanted children and adults, alongside age-matched hearing controls (unprocessed and vocoded stimuli).
Main Results:
- Prelingually deafened children with cochlear implants performed worse than postlingually deafened adults.
- Spectral resolution did not improve with age or implant experience in early implanted children.
- Postlingually deafened adults demonstrated better spectral resolution than early implanted children.
Conclusions:
- Early cochlear implantation may not fully restore spectral resolution capabilities compared to post-lingual implantation.
- The limited signal representation from cochlear implants might hinder spectral resolution development in children.
- Auditory system maturation with cochlear implants differs significantly based on the age of implantation.
