Event-related potentials for better speech perception in noise by cochlear implant users

Soshi, Takahiro; Hisanaga, Satoko; Kodama, Narihiro; Kanekama, Yori; Samejima, Yasuhiro; Yumoto, Eiji; Sekiyama, Kaoru

doi:10.1016/j.heares.2014.08.001

Cited by 23 publications

(33 citation statements)

References 52 publications

(100 reference statements)

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“…Further, our results are in line with previous studies which reported prolonged P3 latency in CI users to simple speech 20 stimuli (vowels and syllables; (Beynon et al, 2005;Soshi et al, 2014) and to words presented in the context of an auditory Stroop task (Henkin et al, 2014). Given that the P3 deflection may reflect stimulus evaluation (Donchin and Coles, 1998;Polich, 2007), our results indicate slowed classification between target and nontarget words in CI users when compared with NH listeners.…”

Section: Lexical and Semantic Speech Processingsupporting

confidence: 92%

“…Despite providing important insights into central auditory processing, most of the EEG studies with CI users have been limited in that they used simple stimuli such as tones and syllables (Beynon et al, 2005;Groenen et al, 2009;Okusa et al, 1999;Soshi et al, 2014). More complex stimuli have been used only recently in a study with a limited stimulus set consisting of two words (Henkin et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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On the relationship between auditory cognition and speech intelligibility in cochlear implant users: An ERP study

et al. 2016

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There is a high degree of variability in speech intelligibility outcomes across cochlear-implant (CI) users. To better understand how auditory cognition affects speech intelligibility with the CI, we performed an electroencephalography study in which we examined the relationship between central auditory processing, cognitive abilities, and speech intelligibility. Postlingually deafened CI users (N=13) and matched normal-hearing (NH) listeners (N=13) performed an oddball task with words presented in different background conditions (quiet, stationary noise, modulated noise). Participants had to categorize words as living (targets) or non-living entities (standards). We also assessed participants' working memory (WM) capacity and verbal abilities. For the oddball task, we found lower hit rates and prolonged response times in CI users when compared with NH listeners. Noise-related prolongation of the N1 amplitude was found for all participants. Further, we observed group-specific modulation effects of event-related potentials (ERPs) as a function of background noise. While NH listeners showed stronger noise-related modulation of the N1 latency, CI users revealed enhanced modulation effects of the N2/N4 latency. In general, higher-order processing (N2/N4, P3) was prolonged in CI users in all background conditions when compared with NH listeners. Longer N2/N4 latency in CI users suggests that these individuals have difficulties to map acoustic-phonetic features to lexical representations. These difficulties seem to be increased for speech-in-noise conditions when compared with speech in quiet background. Correlation analyses showed that shorter ERP latencies were related to enhanced speech intelligibility (N1, N2/N4), better lexical fluency (N1), and lower ratings of listening effort (N2/N4) in CI users. In sum, our findings suggest that CI users and NH listeners differ with regards to both the sensory and the higher-order processing of speech in quiet as well as in noisy background conditions. Our results also revealed that verbal abilities are related to speech processing and speech intelligibility in CI users, confirming the view that auditory cognition plays an important role for CI outcome. We conclude that differences in auditory-cognitive processing contribute to the variability in speech performance outcomes observed in CI users. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Hannover, Finke.Mareike@mh-hannover.de AbstractThere is a high degree of variability in speech intelligibility outcomes across cochlear-implant (CI) users. To better understand how auditory cognition aff...

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Section: Lexical and Semantic Speech Processingsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

On the relationship between auditory cognition and speech intelligibility in cochlear implant users: An ERP study

et al. 2016

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“…This suggests, therefore, that CI users have difficulty in automatically perceiving speech-in-noise, which is an improvement related to central auditory processing, as indicated by the presence of P300 waves [14]. The present case report reinforces the findings of Soshi et al, in which the evolution of P300 responses from the beginning of auditory re-establishment to 6 months of effective use of CI includes a reduced latency and an increased amplitude and is correlated with a better auditory performance [13].…”

Section: Discussionsupporting

confidence: 89%

Long Latency Auditory Potential (P300) Outcomes in a Patient with Vestibular Schwannoma after Cochlear Implant Surgery

Amaral¹,

Calderaro²,

Pauna³

et al. 2018

CRCM

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Background: Neurofibromatosis type 2 (NF2) is a rare syndrome and it is usually presented with bilateral vestibular schwannomas (VS), multiple meningiomas, and other types of tumors associated to peripheral nerves. Hearing loss is one of its leading manifestations, and surgery for removal of the tumor is often required. Cochlear implant (CI) surgery is an option for auditory rehabilitation and long latency auditory potentials (P300) are becoming a very useful tool to assess hearing outcomes. Objective: To verify the presence of P300 waves during auditory and cortical function assessment in a patient submitted to VS removal and CI surgery. Design: Retrospective chart review. Case Report: A 62 years old male patient, presented at the clinic with a bilateral severe to profound hearing loss, worst at the right side. MRI scan revealed bilateral expansive tumor within the internal auditory canal expanding to cerebellopontine angle, suggestive of VS. Tumor was removed at the right side, and CI surgery was indicated for the left ear. P300 tests were performed pre-operatively, at the moment of activation, and 6 months post-operatively. After CI activation, P300 waves appeared, and presented reduced latency and increased amplitude after 6 months of CI use. Conclusion: P300 waves appear to be dependent on the auditory stimulus to be generated, showing that it can be a useful tool to estimate improvement in cortical cognitive function after restoring hearing through CI surgery after VS removal.

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“…Environmental noise, stimulation strategies, type and model of the cochlear implant are other factors which may affect the latency and amplitude of P300 potential [17] [18]. Kileny et al (1997) and Henkin et al (2008) studied a population of respectively 14 and 10 prelingually deaf children [19] [20].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Age and Duration of Cochlear Implant in a Congenital Deaf Population: An ERP Study

Ghiselli¹,

Gheller²,

Trevisi³

et al. 2016

JBiSE

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Objective: It is well known that patients with Cochlear Implant (CI) have a large inter-individual variability in linguistic and auditory performances. This can be related to individual auditory processing abilities and integrity of auditory system from auditory nerve to cerebral cortex. P300 can be used for the evaluation of central auditory functions in people with hearing loss and CI. No studies considered the P300 in the population of prelingually deafened adults that underwent CI in old age. The aim of this study is to assess Event Related Potential (ERP) in patients with congenital profound hearing loss with early or late implantation and evaluate these results respect to an age-matched normal hearing group. Methods: ERPs (N100, N200 and P300) and auditory benefit testing (pure tone average and speech audiometric test) and auditory perception testing (Categories of Auditory Performance-CAP) were evaluated in all subjects with their device. Results: All mean latencies (N100, N200 and P300) were found greater in patients group compared to control group. When analyzing all measures in patient group, we did not find any significant differences according to age of implant while significant difference (p > 0.05) in N100 amplitude (p = 0.045) and P300 latency (p = 0.035) were found according to time of CI use. A linear correlation between N200 and P300 latency in control and patients groups was found. Conclusion: In summary, ERPs analysis in the evaluation of CI showed a great importance of long use of the device in addiction to an early time of implant.

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Event-related potentials for better speech perception in noise by cochlear implant users

Cited by 23 publications

References 52 publications

On the relationship between auditory cognition and speech intelligibility in cochlear implant users: An ERP study

On the relationship between auditory cognition and speech intelligibility in cochlear implant users: An ERP study

Long Latency Auditory Potential (P300) Outcomes in a Patient with Vestibular Schwannoma after Cochlear Implant Surgery

The Impact of Age and Duration of Cochlear Implant in a Congenital Deaf Population: An ERP Study

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