Fundamental Frequency Information for Speech Recognition via Bimodal Stimulation

Shpak, Talma; Most, Tova; Luntz, Michał

doi:10.1097/aud.0b013e3182a2c814

Cited by 23 publications

(15 citation statements)

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“…Bimodal hearing refers to the combination of two different solutions for hearing loss, with fitting a CI in one ear while using a hearing aid (HA) in the opposite ear. Behaviorally, successful bimodal listeners obtained an improvement in speech understanding with CI + HA stimulation (i.e., a unilateral CI together with a contralateral HA) relative to with a unilateral CI alone [22][23][24]. The improved perceptual outcome in the bimodal stimulation over the CI alone condition is referred to as bimodal benefit, and it has been demonstrated in a number of studies of non-tonal languages.…”

Section: Introductionmentioning

confidence: 92%

“…All the child participants were implanted unilaterally and fitted with a contralateral HA. They used the CI in conjunction with HA devices for at least 75% of waking hours (c.f., [22,28]) according to their caregivers' observation. However, 6 were removed from data analysis due to failure in completing all experimental tests.…”

Section: Participantsmentioning

confidence: 99%

“…Our pilot test with four SNR levels (i.e., +10, +5, +3, and 0 dB) in five subjects indicated that the + 5dB SNR would be appropriate to avoid both ceiling and floor effects. Previous research had also used the SNR of +5 dB in word and sentence recognition tests for CI participants (e.g., [22,32,46]).…”

Section: Stimulimentioning

confidence: 99%

“…As a result, more CI candidates have aidable acoustic hearing in the non-implanted ear. The residual acoustic hearing, although it has limited use on its own, is demonstrated as providing a substantial benefit in speech perception when combined with the CI stimulation (e.g., [22,62]). The residual acoustic hearing should be taken into consideration for these individuals while setting up intervention regimens.…”

Section: Limitations and Implicationsmentioning

confidence: 99%

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Bimodal Benefits for Lexical Tone Recognition: An Investigation on Mandarin-speaking Preschoolers with a Cochlear Implant and a Contralateral Hearing Aid

2020

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Pitch perception is known to be difficult for individuals with cochlear implant (CI), and adding a hearing aid (HA) in the non-implanted ear is potentially beneficial. The current study aimed to investigate the bimodal benefit for lexical tone recognition in Mandarin-speaking preschoolers using a CI and an HA in opposite ears. The child participants were required to complete tone identification in quiet and in noise with CI + HA in comparison with CI alone. While the bimodal listeners showed confusion between Tone 2 and Tone 3 in recognition, the additional acoustic information from the contralateral HA alleviated confusion between these two tones in quiet. Moreover, significant improvement was demonstrated in the CI + HA condition over the CI alone condition in noise. The bimodal benefit for individual subjects could be predicted by the low-frequency hearing threshold of the non-implanted ear and the duration of bimodal use. The findings support the clinical practice to fit a contralateral HA in the non-implanted ear for the potential benefit in Mandarin tone recognition in CI children. The limitations call for further studies on auditory plasticity on an individual basis to gain insights on the contributing factors to the bimodal benefit or its absence.

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Section: Introductionmentioning

confidence: 92%

Section: Participantsmentioning

confidence: 99%

Section: Stimulimentioning

confidence: 99%

Section: Limitations and Implicationsmentioning

confidence: 99%

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Bimodal Benefits for Lexical Tone Recognition: An Investigation on Mandarin-speaking Preschoolers with a Cochlear Implant and a Contralateral Hearing Aid

2020

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“…Contralateral residual hearing is mainly situated in the low frequency region [12], which is known to contain cues regarding e.g. voice fundamental frequency, prosody and music [13][14][15][16]. Such information cannot well be captured by electrical stimulation.…”

Section: Introductionmentioning

confidence: 99%

Self-assessment of unilateral and bimodal cochlear implant experiences in daily life

Devocht

Janssen

Chalupper³

et al. 2020

PLoS ONE

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Objective The subjective experiences were assessed of cochlear implant (CI) users either wearing or not wearing a hearing aid (HA) at the contralateral ear. Design Unilateral CI-recipients were asked to fill out a set of daily-life questionnaires on bimodal HA use, hearing disability, hearing handicap and general quality of life. Study sample Twenty-six CI-recipients who regularly use a contralateral HA (bimodal group) and twenty-two CI-recipients who do not use a HA in the contralateral ear (unilateral group). Results Comparisons between both groups (bimodal versus unilateral) showed no difference in self-rated disability, hearing handicap or general quality of life. However within the group of bimodal listeners, participants did report a benefit of bimodal hearing ability in various daily life listening situations. Conclusions Bimodal benefit in daily life can consistently be experienced and reported within the group of bimodal users.

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Evaluating Listening Effort in Unilateral, Bimodal, and Bilateral Cochlear Implant Users

Nyirjesy,

Lewis,

Hallak

et al. 2023

Otolaryngol.--head neck surg.

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ObjectiveEvaluate listening effort (LE) in unilateral, bilateral, and bimodal cochlear implant (CI) users. Establish an easy‐to‐implement task of LE that could be useful for clinical decision making.Study DesignProspective cohort study.SettingTertiary neurotology center.MethodsThe Sentence Final Word Identification and Recall Task, an established measure of LE, was modified to include challenging listening conditions (multitalker babble, gender, and emotional variation; test), in addition to single‐talker sentences (control). Participants listened to lists of sentences in each condition and recalled the last word of each sentence. LE was quantified by percentage of words correctly recalled and was compared across conditions, across CI groups, and within subjects (best aided vs monaural).ResultsA total of 24 adults between the ages of 37 and 82 years enrolled, including 4 unilateral CI users (CI), 10 bilateral CI users (CICI), and 10 bimodal CI users (CIHA). Task condition impacted LE (P < .001), but hearing configuration and listener group did not (P = .90). Working memory capacity and contralateral hearing contributed to individual performance.ConclusionThis study adds to the growing body of literature on LE in challenging listening conditions for CI users and demonstrates feasibility of a simple behavioral task that could be implemented clinically to assess LE. This study also highlights the potential benefits of bimodal hearing and individual hearing and cognitive factors in understanding individual differences in performance, which will be evaluated through further research.

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Fundamental Frequency Information for Speech Recognition via Bimodal Stimulation

Abstract: The higher scores obtained in the CI/HA condition than with CI alone in both of the task-specific tests suggested that the use of a contralateral HA provides improved low-frequency information, resulting in better performance by the CI/HA users.

Cited by 23 publications

References 0 publications

Bimodal Benefits for Lexical Tone Recognition: An Investigation on Mandarin-speaking Preschoolers with a Cochlear Implant and a Contralateral Hearing Aid

Bimodal Benefits for Lexical Tone Recognition: An Investigation on Mandarin-speaking Preschoolers with a Cochlear Implant and a Contralateral Hearing Aid

Self-assessment of unilateral and bimodal cochlear implant experiences in daily life

Evaluating Listening Effort in Unilateral, Bimodal, and Bilateral Cochlear Implant Users

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