Age-Related Temporal Processing Deficits in Word Segments in Adult Cochlear-Implant Users

dc.contributor.authorXie, Zilong
dc.contributor.authorGaskins, Casey R.
dc.contributor.authorShader, Maureen J.
dc.contributor.authorGordon-Salant, Sandra
dc.contributor.authorAnderson, Samira
dc.contributor.authorGoupell, Matthew J.
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.en_US
dc.description.abstractAging may limit speech understanding outcomes in cochlear-implant (CI) users. Here, we examined age-related declines in auditory temporal processing as a potential mechanism that underlies speech understanding deficits associated with aging in CI users. Auditory temporal processing was assessed with a categorization task for the words dish and ditch (i.e., identify each token as the word dish or ditch) on a continuum of speech tokens with varying silence duration (0 to 60 ms) prior to the final fricative. In Experiments 1 and 2, younger CI (YCI), middle-aged CI (MCI), and older CI (OCI) users participated in the categorization task across a range of presentation levels (25 to 85 dB). Relative to YCI, OCI required longer silence durations to identify ditch and exhibited reduced ability to distinguish the words dish and ditch (shallower slopes in the categorization function). Critically, we observed age-related performance differences only at higher presentation levels. This contrasted with findings from normal-hearing listeners in Experiment 3 that demonstrated age-related performance differences independent of presentation level. In summary, aging in CI users appears to degrade the ability to utilize brief temporal cues in word identification, particularly at high levels. Age-specific CI programming may potentially improve clinical outcomes for speech understanding performance by older CI listeners.en_US
dc.identifier.citationXie, Z., Gaskins, C. R., Shader, M. J., Gordon-Salant, S., Anderson, S., & Goupell, M. J. (2019). Age-Related Temporal Processing Deficits in Word Segments in Adult Cochlear-Implant Users. Trends in Hearing.
dc.relation.isAvailableAtCollege of Behavioral & Social Sciencesen_us
dc.relation.isAvailableAtHearing & Speech Sciencesen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectcochlear implanten_US
dc.subjecttemporal processingen_US
dc.subjectpresentation levelen_US
dc.titleAge-Related Temporal Processing Deficits in Word Segments in Adult Cochlear-Implant Usersen_US


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