Long-Term Improvement of Speech Perception with the Fine Structure Processing Coding Strategy in Cochlear Implants

Punte, Andrea Kleine; Bodt, Marc De; Heyning, Paul Van de

doi:10.1159/000360479

Cited by 25 publications

(6 citation statements)

References 28 publications

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“…Studies have suggested that bilateral CI listeners benefit from the FSP stimulation strategy in a speech discrimination test in noise (12)(13)(14)(15)(16), especially for native speakers of tonal languages (17)(18)(19). Dorman et al (20) studied sound localization in FSP and CIS bilateral users and did not find differences between subgroups.…”

Section: Introductionmentioning

confidence: 99%

Spatial Hearing by Bilateral Cochlear Implant Users With Temporal Fine-Structure Processing

et al. 2020

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Several studies have demonstrated the advantages of the bilateral vs. unilateral cochlear implantation in listeners with bilateral severe to profound hearing loss. However, it remains unclear to what extent bilaterally implanted listeners have access to binaural cues, e.g., accurate processing of interaural timing differences (ITDs) for low-frequency sounds (<1.5 kHz) and interaural level differences (ILDs) for high frequencies (>3 kHz). We tested 25 adult listeners, bilaterally implanted with MED-EL cochlear implant (CI) devices, with and without fine-structure (FS) temporal processing as encoding strategy in the low-frequency channels. In order to assess whether the ability to process binaural cues was affected by fine-structure processing, we performed psychophysical ILD and ITD sensitivity measurements and free-field sound localization experiments. We compared the results of the bilaterally implanted listeners with different numbers of FS channels. All CI listeners demonstrated good sensitivity to ILDs, but relatively poor to ITD cues. Although there was a large variability in performance, some bilateral CI users showed remarkably good localization skills. The FS coding strategy for bilateral CI hearing did not improve fine-structure ITD processing for spatial hearing on a group level. However, some CI listeners were able to exploit weakly informative temporal cues to improve their low-frequency spatial perception.

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Section: Introductionmentioning

confidence: 99%

Spatial Hearing by Bilateral Cochlear Implant Users With Temporal Fine-Structure Processing

et al. 2020

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“…After 12 months of listening experience, the FSP coding strategy group showed a significant improvement in speech perception in noise while the HDCIS group showed no difference. In a follow-up study, Kleine Punte, De Bodt and Van de Heyning (2014) reported an improvement in the FSP coding strategy group after 24 months of listening experience, while the HDCIS coding strategy group did not show a significant difference. It is possible that extended listening experience, beyond the 6-month interval evaluated here, may be needed to benefit from electrically represented fine structure information.…”

Section: Discussionmentioning

confidence: 94%

Comparison of two cochlear implant coding strategies on speech perception

Dillon

Buss

King

et al. 2016

Cochlear Implants International

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Objective Assess whether differences in speech perception are observed after exclusive listening experience with High Definition Continuous Interleaved Sampling (HDCIS) versus Fine Structure Processing (FSP) coding strategies. Methods Subjects were randomly assigned at initial activation of the external speech processor to receive the HDCIS or FSP coding strategy. Frequency filter assignments were consistent across subjects. The speech perception test battery included CNC words in quiet, HINT sentences in quiet and steady noise (+10 dB SNR), AzBio sentences in quiet and a 10-talker babble (+10 dB SNR), and BKB-SIN. Assessment intervals included 1, 3 and 6 months post-activation. Results Data from 22 subjects (11 with HDCIS and 11 with FSP) were assessed over time. Speech perception performance was not significantly different between groups. Discussion Speech perception performance was not significantly different after 6-months of listening experience with the HDCIS or FSP coding strategy.

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“…Seebens and Diller [13] revealed similar result in their study about upgrading form TEMPO+ to OPUS 2 speech processor. In the long-term follow up study about upgrading to speech processor with newer coding strategy, subjects with newer speech processor revealed better performance [14]. As above mentioned, there is no documented analysis of the impact of the whole system upgrade on speech performance.…”

Section: Discussionmentioning

confidence: 99%

Feasibility of Revision Cochlear Implant Surgery for Better Speech Comprehension

Hwang

Lee

et al. 2019

J Audiol Otol

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Background and Objectives The purpose of this study was to evaluate the efficacy of revision cochlear implant (CI) surgery for better speech comprehension targeting patients with low satisfaction after first CI surgery. Subjects and Methods Eight patients who could not upgrade speech processors because of an too early CI model and who wanted to change the whole system were included. After revision CI surgery, we compared speech comprehension before and after revision CI surgery. Categoies of Auditory Performance (CAP) score, vowel and consonant confusion test, Ling 6 sounds, word and sentence identification test were done. Results The interval between surgeries ranged from eight years to 19 years. Same manufacturer’s latest product was used for revision surgery in six cases of eight cases. Full insertion of electrode was possible in most of cases (seven of eight). CAP score ( p -value=0.01), vowel confusion test ( p -value=0.041), one syllable word identification test ( p -value=0.026), two syllable identification test ( p -value=0.028), sentence identification test (pvalue=0.028) had significant improvement. Consonant confusion test ( p -value=0.063), Ling 6 sound test ( p -value=0.066) had improvement but it is not significant. Conclusions Although there are some limitations of our study design, we could identify the effect of revision (upgrade) CI surgery indirectly. So we concluded that if patient complain low functional gain or low satisfaction after first CI surgery, revision (device upgrade) CI surgery is meaningful even if there is no device failure.

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Long-Term Improvement of Speech Perception with the Fine Structure Processing Coding Strategy in Cochlear Implants

Cited by 25 publications

References 28 publications

Spatial Hearing by Bilateral Cochlear Implant Users With Temporal Fine-Structure Processing

Spatial Hearing by Bilateral Cochlear Implant Users With Temporal Fine-Structure Processing

Comparison of two cochlear implant coding strategies on speech perception

Feasibility of Revision Cochlear Implant Surgery for Better Speech Comprehension

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