Cochlear Implantation in Cases of Unilateral Hearing Loss: Initial Localization Abilities

Margaret T. Dillon, Emily Buss, Meredith L. Anderson, English R. King, Ellen J. Deres, Craig A. Buchman, Kevin D. Brown, Harold C. Pillsbury

Research output: Research - peer-reviewArticle

  • 1 Citations

Abstract

OBJECTIVES:: The present study evaluated early auditory localization abilities of cochlear implant (CI) recipients with normal or near-normal hearing (NH) in the contralateral ear. The goal of the study was to better understand the effect of CI listening experience on localization in this population. DESIGN:: Twenty participants with unilateral hearing loss enrolled in a prospective clinical trial assessing outcomes of cochlear implantation (ClinicalTrials.gov Identifier: NCT02203305). All participants received the MED-EL Standard electrode array, were fit with an ear-level audio processor, and listened with the FS4 coding strategy. Localization was assessed in the sound field using an 11-speaker array with speakers uniformly positioned on a horizontal, semicircular frame. Stimuli were 200-msec speech-shaped noise bursts. The intensity level (52, 62, and 72 dB SPL) and sound source were randomly interleaved across trials. Participants were tested preoperatively, and 1, 3, and 6 months after activation of the audio processor. Performance was evaluated in two conditions at each interval: (1) unaided (NH ear alone [NH-alone] condition), and (2) aided, with either a bone conduction hearing aid (preoperative interval; bone conduction hearing aid + NH condition) or a CI (postoperative intervals; CI + NH condition). Performance was evaluated by comparing root-mean-squared (RMS) error between listening conditions and between measurement intervals. RESULTS:: Mean RMS error for the soft, medium, and loud levels were 66°, 64°, and 69° in the NH-alone condition and 72°, 66°, and 70° in the bone conduction hearing aid + NH condition. Participants experienced a significant improvement in localization in the CI + NH condition at the 1-month interval (38°, 35°, and 38°) as compared with the preoperative NH-alone condition. Localization in the CI + NH condition continued to improve through the 6-month interval. Mean RMS errors were 28°, 25°, and 28° in the CI + NH condition at the 6-month interval. CONCLUSIONS:: Adult CI recipients with normal or near-normal hearing in the contralateral ear experienced significant improvement in localization after 1 month of device use, and continued to improve through the 6-month interval. The present results show that binaural acclimatization in CI users with unilateral hearing loss can progress rapidly, with marked improvements in performance observed after only 1 month of listening experience.

LanguageEnglish (US)
JournalEar and Hearing
DOIs
StateAccepted/In press - Apr 3 2017

Fingerprint

Unilateral Hearing Loss
Cochlear Implantation
Aptitude
Hearing
Cochlear Implants
Ear
Bone Conduction
Hearing Aids
Sound Localization
Acclimatization
Noise
Electrodes
Clinical Trials
Equipment and Supplies
Population

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Speech and Hearing

Cite this

Cochlear Implantation in Cases of Unilateral Hearing Loss : Initial Localization Abilities. / Dillon, Margaret T.; Buss, Emily; Anderson, Meredith L.; King, English R.; Deres, Ellen J.; Buchman, Craig A.; Brown, Kevin D.; Pillsbury, Harold C.

In: Ear and Hearing, 03.04.2017.

Research output: Research - peer-reviewArticle

Dillon MT, Buss E, Anderson ML, King ER, Deres EJ, Buchman CA et al. Cochlear Implantation in Cases of Unilateral Hearing Loss: Initial Localization Abilities. Ear and Hearing. 2017 Apr 3. Available from, DOI: 10.1097/AUD.0000000000000430
Dillon, Margaret T. ; Buss, Emily ; Anderson, Meredith L. ; King, English R. ; Deres, Ellen J. ; Buchman, Craig A. ; Brown, Kevin D. ; Pillsbury, Harold C./ Cochlear Implantation in Cases of Unilateral Hearing Loss : Initial Localization Abilities. In: Ear and Hearing. 2017
@article{3a9c07b20e754dc8978d3a8dde423aa1,
title = "Cochlear Implantation in Cases of Unilateral Hearing Loss: Initial Localization Abilities",
abstract = "OBJECTIVES:: The present study evaluated early auditory localization abilities of cochlear implant (CI) recipients with normal or near-normal hearing (NH) in the contralateral ear. The goal of the study was to better understand the effect of CI listening experience on localization in this population. DESIGN:: Twenty participants with unilateral hearing loss enrolled in a prospective clinical trial assessing outcomes of cochlear implantation (ClinicalTrials.gov Identifier: NCT02203305). All participants received the MED-EL Standard electrode array, were fit with an ear-level audio processor, and listened with the FS4 coding strategy. Localization was assessed in the sound field using an 11-speaker array with speakers uniformly positioned on a horizontal, semicircular frame. Stimuli were 200-msec speech-shaped noise bursts. The intensity level (52, 62, and 72 dB SPL) and sound source were randomly interleaved across trials. Participants were tested preoperatively, and 1, 3, and 6 months after activation of the audio processor. Performance was evaluated in two conditions at each interval: (1) unaided (NH ear alone [NH-alone] condition), and (2) aided, with either a bone conduction hearing aid (preoperative interval; bone conduction hearing aid + NH condition) or a CI (postoperative intervals; CI + NH condition). Performance was evaluated by comparing root-mean-squared (RMS) error between listening conditions and between measurement intervals. RESULTS:: Mean RMS error for the soft, medium, and loud levels were 66°, 64°, and 69° in the NH-alone condition and 72°, 66°, and 70° in the bone conduction hearing aid + NH condition. Participants experienced a significant improvement in localization in the CI + NH condition at the 1-month interval (38°, 35°, and 38°) as compared with the preoperative NH-alone condition. Localization in the CI + NH condition continued to improve through the 6-month interval. Mean RMS errors were 28°, 25°, and 28° in the CI + NH condition at the 6-month interval. CONCLUSIONS:: Adult CI recipients with normal or near-normal hearing in the contralateral ear experienced significant improvement in localization after 1 month of device use, and continued to improve through the 6-month interval. The present results show that binaural acclimatization in CI users with unilateral hearing loss can progress rapidly, with marked improvements in performance observed after only 1 month of listening experience.",
author = "Dillon, {Margaret T.} and Emily Buss and Anderson, {Meredith L.} and King, {English R.} and Deres, {Ellen J.} and Buchman, {Craig A.} and Brown, {Kevin D.} and Pillsbury, {Harold C.}",
year = "2017",
month = "4",
doi = "10.1097/AUD.0000000000000430",
journal = "Ear and Hearing",
issn = "0196-0202",
publisher = "Lippincott Williams and Wilkins",

}

TY - JOUR

T1 - Cochlear Implantation in Cases of Unilateral Hearing Loss

T2 - Ear and Hearing

AU - Dillon,Margaret T.

AU - Buss,Emily

AU - Anderson,Meredith L.

AU - King,English R.

AU - Deres,Ellen J.

AU - Buchman,Craig A.

AU - Brown,Kevin D.

AU - Pillsbury,Harold C.

PY - 2017/4/3

Y1 - 2017/4/3

N2 - OBJECTIVES:: The present study evaluated early auditory localization abilities of cochlear implant (CI) recipients with normal or near-normal hearing (NH) in the contralateral ear. The goal of the study was to better understand the effect of CI listening experience on localization in this population. DESIGN:: Twenty participants with unilateral hearing loss enrolled in a prospective clinical trial assessing outcomes of cochlear implantation (ClinicalTrials.gov Identifier: NCT02203305). All participants received the MED-EL Standard electrode array, were fit with an ear-level audio processor, and listened with the FS4 coding strategy. Localization was assessed in the sound field using an 11-speaker array with speakers uniformly positioned on a horizontal, semicircular frame. Stimuli were 200-msec speech-shaped noise bursts. The intensity level (52, 62, and 72 dB SPL) and sound source were randomly interleaved across trials. Participants were tested preoperatively, and 1, 3, and 6 months after activation of the audio processor. Performance was evaluated in two conditions at each interval: (1) unaided (NH ear alone [NH-alone] condition), and (2) aided, with either a bone conduction hearing aid (preoperative interval; bone conduction hearing aid + NH condition) or a CI (postoperative intervals; CI + NH condition). Performance was evaluated by comparing root-mean-squared (RMS) error between listening conditions and between measurement intervals. RESULTS:: Mean RMS error for the soft, medium, and loud levels were 66°, 64°, and 69° in the NH-alone condition and 72°, 66°, and 70° in the bone conduction hearing aid + NH condition. Participants experienced a significant improvement in localization in the CI + NH condition at the 1-month interval (38°, 35°, and 38°) as compared with the preoperative NH-alone condition. Localization in the CI + NH condition continued to improve through the 6-month interval. Mean RMS errors were 28°, 25°, and 28° in the CI + NH condition at the 6-month interval. CONCLUSIONS:: Adult CI recipients with normal or near-normal hearing in the contralateral ear experienced significant improvement in localization after 1 month of device use, and continued to improve through the 6-month interval. The present results show that binaural acclimatization in CI users with unilateral hearing loss can progress rapidly, with marked improvements in performance observed after only 1 month of listening experience.

AB - OBJECTIVES:: The present study evaluated early auditory localization abilities of cochlear implant (CI) recipients with normal or near-normal hearing (NH) in the contralateral ear. The goal of the study was to better understand the effect of CI listening experience on localization in this population. DESIGN:: Twenty participants with unilateral hearing loss enrolled in a prospective clinical trial assessing outcomes of cochlear implantation (ClinicalTrials.gov Identifier: NCT02203305). All participants received the MED-EL Standard electrode array, were fit with an ear-level audio processor, and listened with the FS4 coding strategy. Localization was assessed in the sound field using an 11-speaker array with speakers uniformly positioned on a horizontal, semicircular frame. Stimuli were 200-msec speech-shaped noise bursts. The intensity level (52, 62, and 72 dB SPL) and sound source were randomly interleaved across trials. Participants were tested preoperatively, and 1, 3, and 6 months after activation of the audio processor. Performance was evaluated in two conditions at each interval: (1) unaided (NH ear alone [NH-alone] condition), and (2) aided, with either a bone conduction hearing aid (preoperative interval; bone conduction hearing aid + NH condition) or a CI (postoperative intervals; CI + NH condition). Performance was evaluated by comparing root-mean-squared (RMS) error between listening conditions and between measurement intervals. RESULTS:: Mean RMS error for the soft, medium, and loud levels were 66°, 64°, and 69° in the NH-alone condition and 72°, 66°, and 70° in the bone conduction hearing aid + NH condition. Participants experienced a significant improvement in localization in the CI + NH condition at the 1-month interval (38°, 35°, and 38°) as compared with the preoperative NH-alone condition. Localization in the CI + NH condition continued to improve through the 6-month interval. Mean RMS errors were 28°, 25°, and 28° in the CI + NH condition at the 6-month interval. CONCLUSIONS:: Adult CI recipients with normal or near-normal hearing in the contralateral ear experienced significant improvement in localization after 1 month of device use, and continued to improve through the 6-month interval. The present results show that binaural acclimatization in CI users with unilateral hearing loss can progress rapidly, with marked improvements in performance observed after only 1 month of listening experience.

UR - http://www.scopus.com/inward/record.url?scp=85017140401&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85017140401&partnerID=8YFLogxK

U2 - 10.1097/AUD.0000000000000430

DO - 10.1097/AUD.0000000000000430

M3 - Article

JO - Ear and Hearing

JF - Ear and Hearing

SN - 0196-0202

ER -