University of Maryland, College Park
Older adults who use cochlear implants to address hearing loss show wide variation in benefit. This research investigates the role of normal aging, the health of peripheral and central auditory pathways, and positioning of the cochlear implant electrode array in contributing to this variability. A range of input types from simple auditory signals to spoken sentences is used to examine these questions.
This research aims to understand age-related temporal processing in older cochlear-implant (CI) users. The overall objective is to disentangle the peripheral and central contributions to age-related temporal processing deficits in this population. The central hypothesis is that age-related speech perception deficits are explained by unique contributions from peripheral and central auditory functions, significantly affecting outcomes in older CI users. The central hypothesis will be tested by determining (1) the extent to which temporal processing of simple signals from single-electrode stimul…
For Cochlear Implant arm: Inclusion Criteria: * cochlear implant in one or both ears * post-lingual onset of deafness * 1+ years cochlear implant experience * use of Cochlear-brand implants * implanted after 2004 Exclusion Criteria: * use of non-Cochlear-brand cochlear implants * no use of oral language * pregnant women are not eligible for the imaging portion of the study. * residual acoustic hearing with unaided thresholds \<90 dB HL at more than two standard audiometric frequencies * other known disability or neurological disorder For Typical Hearing arm: Inclusion Criteria: * audiom…
Because the subjects in the study will use CI devices that they have already received as part of their standard-of-care treatment, the medical device itself is not an intervention for the purposes of this study. The intervention here will be to carry out diagnostic tests of CI function. This will include perceptual tests of temporal discrimination and speech understanding.
The intervention here will be to carry out diagnostic tests of hearing. This will include perceptual tests of temporal discrimination and speech understanding.
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