Effectiveness of Place-based Mapping in Electric-Acoustic Stimulation Devices.
Background: The default mapping procedure for electric-acoustic stimulation (EAS) devices uses the cochlear implant recipient's unaided detection thresholds in the implanted ear to derive the acoustic settings and assign the lowest frequency filter of electric stimulation. Individual differences for...
| Published in: | Otology & Neurotology Vol. 42; no. 1; pp. 197 - 203 |
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| Main Authors: | , , , , |
| Format: | research Journal Article |
| Published: |
Lippincott Williams & Wilkins
Jan2021
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=150946877&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 150946877 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15317129 I6D jtl: Otology & Neurotology issn: 15317129 maglogo: N pubinfo: dt: Jan2021 vid: 42 iid: 1 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 150946877 150946877 NLM33885267 150946877 10.1097/MAO.0000000000002965 NLM33885267 150946877 ppf: 197 ppct: 6 formats: tig: atl: Effectiveness of Place-based Mapping in Electric-Acoustic Stimulation Devices. aug: au: Dillon, Margaret T Canfarotta, Michael W Buss, Emily Hopfinger, Joseph O'Connell, Brendan P affil: *Department of Otolaryngology/Head and Neck Surgery, School of Medicine †Division of Speech & Hearing, Department of Allied Health Sciences ‡Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, North Carolina sug: subj: Cochlear Implant Speech Perception Auditory Threshold Acoustic Stimulation Acoustics Human Electric Stimulation Noise Comparative Studies Multicenter Studies Evaluation Research Validation Studies ab: Background: The default mapping procedure for electric-acoustic stimulation (EAS) devices uses the cochlear implant recipient's unaided detection thresholds in the implanted ear to derive the acoustic settings and assign the lowest frequency filter of electric stimulation. Individual differences for speech recognition with EAS may be due to discrepancies between the electric frequency filters of individual electrode contacts and the cochlear place of stimulation, known as a frequency-to-place mismatch. Frequency-to-place mismatch of greater than 1/2 octave has been demonstrated in up to 60% of EAS users. Aligning the electric frequency filters via a place-based mapping procedure using postoperative imaging may improve speech recognition with EAS.Methods: Masked sentence recognition was evaluated for normal-hearing subjects (n = 17) listening with vocoder simulations of EAS, using a place-based map and a default map. Simulation parameters were based on audiometric and imaging data from a representative 24-mm electrode array recipient and EAS user. The place-based map aligned electric frequency filters with the cochlear place frequency, which introduced a gap between the simulated acoustic and electric output. The default map settings were derived from the clinical programming software and provided the full speech frequency range.Results: Masked sentence recognition was significantly better for simulated EAS with the place-based map as compared with the default map.Conclusion: The simulated EAS place-based map supported better performance than the simulated EAS default map. This indicates that individualizing maps may improve performance in EAS users by helping them achieve better asymptotic performance earlier and mitigate the need for acclimatization. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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