Margaret E. Richter

ORCID: 0000-0003-1729-0828
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About
Contact & Profiles
Research Areas
  • Hearing Loss and Rehabilitation
  • Noise Effects and Management
  • Hearing, Cochlea, Tinnitus, Genetics
  • Speech and Audio Processing
  • Hearing Impairment and Communication
  • Language Development and Disorders
  • Ear Surgery and Otitis Media

University of North Carolina at Chapel Hill
2020-2024

Google (United States)
2022-2024

The objectives were to characterize the effects of wearing face coverings on: 1) acoustic speech cues, and 2) recognition patients with hearing loss who listen a cochlear implant.A prospective cohort study was performed in tertiary referral center between July September 2020. A female talker recorded sentences three conditions: no covering, N95 mask, mask plus shield. Spectral differences analyzed produced each condition. condition for twenty-three adult at least 6 months implant use...

10.1002/lary.29447 article EN The Laryngoscope 2021-02-16

The U.S. Food and Drug Administration indications for cochlear implantation in children is currently 9 months of age older with bilateral profound sensorineural hearing loss (SNHL). Studies have shown that earlier activation a implant (CI) can lead to better spoken language outcomes. As auditory skills are precursor the development language, this study was developed investigate influence at CI on skill acquisition young children. A secondary aim describe implanted prior as compared ages activation.

10.1044/2022_jslhr-22-00039 article EN Journal of Speech Language and Hearing Research 2022-08-24

To assess whether early, significant improvements in sound source localization observed cochlear implant (CI) recipients with normal hearing (NH) the contralateral ear are maintained after 5 years of CI use.Prospective, repeated measures study.Participants were recruited from a sample + NH listeners (n = 20) who received their device as part prospective clinical trial investigating outcomes use for adult cases single-sided deafness. Sound was assessed annually endpoint (1-year...

10.1002/lary.30065 article EN The Laryngoscope 2022-02-17

Cochlear implant (CI) recipients with hearing preservation experience significant improvements in speech recognition electric-acoustic stimulation (EAS) as compared to a CI alone, although outcomes across EAS users vary. The individual differences performance may be due part default mapping procedures, which result electric frequency-to-place mismatches for the majority of users. This study assessed influence on early users.Twenty-one participants were randomized at activation listen...

10.1044/2022_aja-21-00254 article EN cc-by American Journal of Audiology 2023-02-17

Objective: Assess the influence of cochlear implant (CI) use on perceived listening effort adult and pediatric subjects with unilateral hearing loss (UHL) or asymmetric (AHL). Study design: Prospective cohort. Setting: Tertiary referral center. Patients: Adults children UHL AHL. Intervention: Cochlear implantation. Subjects received their CI as part a clinical trial assessing effectiveness implantation in cases Main outcome measures: Responses to Listening Effort pragmatic subscale Speech,...

10.1097/mao.0000000000003261 article EN Otology & Neurotology 2021-07-01

Abstract Objectives Access to cochlear implantation may be negatively influenced by extended travel time a implant (CI) center or lower socioeconomic status (SES) for the individual. There is critical need understand influence of these variables on patient appointment attendance candidacy evaluations, and CI recipients' adherence post‐activation follow‐up recommendations that support optimal outcomes. Methods A retrospective chart review adult patients referred in North Carolina initial...

10.1002/lio2.1010 article EN cc-by Laryngoscope Investigative Otolaryngology 2023-01-17

A prospective clinical trial evaluated the effectiveness of cochlear implantation in adults with asymmetric hearing loss (AHL). Twenty subjects mild-to-moderate better ear and moderate-to-profound poorer underwent ear. Subjects were preoperatively at 1, 3, 6, 9, 12 months post-activation. Preoperative performance was unaided, traditional aids (HAs) or a bone-conduction HA. Post-activation implant (CI) alone combination contralateral HA (bimodal). Test measures included subjective benefit,...

10.1177/2331216520945524 article EN cc-by-nc Trends in Hearing 2020-01-01

The purpose of this study was to evaluate the ability discriminate yes/no questions from statements in three groups children: bilateral cochlear implant (CI) users, nontraditional CI users with aidable hearing preoperatively ear be implanted, and controls normal hearing. Half had sufficient postoperative acoustic implanted use electric-acoustic stimulation, half used a alone.

10.1044/2024_jslhr-23-00631 article EN Journal of Speech Language and Hearing Research 2024-05-15

Objectives: Normally-hearing (NH) listeners rely more on prosodic cues than lexical-semantic for emotion perception in speech. In everyday spoken communication, the ability to decipher conflicting information between and can be important: example, identifying sarcasm or irony. Speech degradation cochlear implants (CIs) sufficiently overcome identify cues, but distortion of voice pitch makes it particularly challenging hear prosody with CIs. The purpose this study was examine changes relative...

10.1097/aud.0000000000001057 article EN Ear and Hearing 2021-07-21

Objective Comparison of acute speech recognition for cochlear implant (CI) alone and electric‐acoustic stimulation (EAS) users listening with default maps or place‐based using either a spiral ganglion (SG) new Synchrotron Radiation‐Artificial Intelligence (SR‐AI) frequency‐to‐place function. Methods Thirteen adult CI‐alone EAS completed task at initial device activation that differed in the electric filter frequency assignments. The three map conditions were: (1) settings ( ), (2) filters...

10.1002/lary.30710 article EN The Laryngoscope 2023-04-20

Cochlear implant (CI) recipients with normal hearing (NH) in the contralateral ear experience a significant improvement sound source localization when listening CI combination their NH-ear (CI + NH) as compared to alone. The is primarily due sensitivity interaural level differences (ILDs). Sensitivity timing (ITDs) may be limited by auditory aging, frequency-to-place mismatches, signal coding strategy, and duration of use. present report assessed ILD ITD cues NH listeners who were long...

10.1159/000523969 article EN Audiology and Neurotology 2022-01-01

Objective To assess long‐term binaural hearing abilities for cochlear implant (CI) users with unilateral loss (UHL) or asymmetric (AHL). Methods A prospective, longitudinal, repeated measures study was completed at a tertiary referral center evaluating adults UHL AHL undergoing implantation. Binaural were assessed masked speech recognition tasks using AzBio sentences in 10‐talker masker. Performance evaluated as the ability to benefit from spatial release masking (SRM). SRM calculated...

10.1002/lary.30368 article EN The Laryngoscope 2022-08-29

Objectives Assess the long‐term patterns of perceived tinnitus severity and subjective benefit for adult cochlear implant (CI) users with asymmetric or unilateral hearing loss (AHL UHL). Methods Forty adults underwent implantation as part a prospective clinical trial assessing outcomes CI use in cases AHL ( n = 20) UHL 20). Subjective measures included Tinnitus Handicap Inventory (THI), Speech, Spatial, & Qualities Hearing Scale (SSQ), Abbreviated Profile Aid Benefit (APHAB). Responses...

10.1002/lary.30608 article EN The Laryngoscope 2023-02-09

The purpose of this study was to assess the influence talker protective face coverings on sentence recognition in noise for cochlear implant users.The AzBio sentences were recorded three conditions: (a) without any covering (uncovered), (b) with an N95 mask, or (c) mask plus shield. Target presented at 60 dB SPL, and 10-talker masker 50 SPL (10 signal-to-noise ratio. Speech these auditory stimuli compared across conditions 21 adult subjects least 6 months (CI) use.Significant deterioration...

10.1044/2021_aja-21-00173 article EN American Journal of Audiology 2022-03-10

Cochlear implant (CI) recipients with normal or near hearing (NH) in the contralateral ear, referred to as single-sided deafness (SSD), experience significantly better speech recognition noise their CI than without it, although reported outcomes vary. One possible explanation for differences across studies could be spatial configurations used assess performance. This study compared different of target and masker, test materials clinically.Sixteen users SSD completed tasks masked presented...

10.1044/2022_aja-21-00268 article EN American Journal of Audiology 2022-07-25

This project investigated whether pediatric (5-14 years) and adult (30-60 cochlear implant (CI) users benefit from a target/masker sex-mismatch for speech-in-speech recognition. Speech recognition thresholds were estimated in two-male-talker or two-female-talker masker. Target masker speech either sex-matched sex-mismatched. For both age groups, performance talkers was worse male than female speech. Sex-mismatch observed the masker, indicating CI can sex mismatch. No suggesting this effect...

10.1121/10.0005806 article EN cc-by JASA Express Letters 2021-08-01
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