Speech identification and cortical potentials in individuals with auditory neuropathy

Narne, Vijaya Kumar; Vanaja, C. S.

doi:10.1186/1744-9081-4-15

Cited by 47 publications

(44 citation statements)

References 18 publications

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“…The findings of this study agree with those of Narne and Vanaja, 2008, in which they found that the amplitude of N1-P2 in auditory neuropathy was significantly smaller and that the latencies were significantly longer than those of normal adults. Their findings support the idea of abnormal cortical N1-P2 recordings in ANSD [13] .…”

Section: Pta (Db) Wds (%)supporting

confidence: 92%

“…Their findings support the idea of abnormal cortical N1-P2 recordings in ANSD [13] . Rance suggests that the prolonged latencies could be due to dys-synchronous firing rate in those patients [17] .…”

Section: Pta (Db) Wds (%)supporting

confidence: 82%

“…In spite of auditory neuropathy patients having abnormal or absent ABRs, they may show N1 and P2 auditory cortical potentials to tones [12] , speech signals [13] , and silent gaps in continuous noise [14] . However, these cortical potentials typically may be prolonged in latencies compared to normal hearing subjects.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Auditory N1-P2 Cortical Event Related Potentials in Auditory Neuropathy Spectrum Disorder Patients

Abdeltawwab¹

2015

Int Adv Otol

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Section: Pta (Db) Wds (%)supporting

confidence: 92%

Section: Pta (Db) Wds (%)supporting

confidence: 82%

See 1 more Smart Citation

Auditory N1-P2 Cortical Event Related Potentials in Auditory Neuropathy Spectrum Disorder Patients

Abdeltawwab¹

2015

Int Adv Otol

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“…Though individuals with auditory dys-synchrony have abnormal (or absent) ABRs, it is possible to elicit late latency responses (LLRs) from these individuals for a variety of stimuli [11][12][13] . Starr et al [3] were the first to relate LLRs and speech perception in individuals with auditory dys-synchrony.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, Rance et al [10] were able to link observed improvements in aided speech identification to the presence of recordable cortical event-related potentials in their subjects. Narne and Vanaja [12] classified their subjects with auditory dys-synchrony into two groups, namely good and poor performers, based on their speech identification scores. They recorded click-evoked LLRs for their subjects and found that the N1-P2 amplitudes were significantly greater in good performers than in poor performers.…”

Section: Introductionmentioning

confidence: 99%

Cortical Evoked Potentials and Hearing Aids in Individuals with Auditory Dys-Synchrony

Yuvaraj

Mohan²

2016

Int Adv Otol

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OBJECTIVE:The purpose of the present study was to investigate the relationship between cortical processing of speech and benefit from hearing aids in individuals with auditory dys-synchrony. MATERIALS and METHODS:Data were collected from 38 individuals with auditory dys-synchrony. Participants were selected based on hearing thresholds, middle ear reflexes, otoacoustic emissions, and auditory brain stem responses. Cortical-evoked potentials were recorded for click and speech. Participants with auditory dys-synchrony were fitted with bilateral multichannel wide dynamic range compression hearing aids. Aided and unaided speech identification scores for 40 words were obtained for each participant. RESULTS:Hierarchical cluster analysis using Ward's method clearly showed four subgroups of participants with auditory dys-synchrony based on the hearing aid benefit score (aided minus unaided speech identification score). The difference in the mean aided and unaided speech identification scores was significantly different in participants with auditory dys-synchrony. However, the mean unaided speech identification scores were not significantly different between the four subgroups. The N2 amplitude and P1 latency of the speech-evoked cortical potentials were significantly different between the four subgroups formed based on hearing aid benefit scores. CONCLUSION:The results indicated that subgroups of individuals with auditory dys-synchrony who benefit from hearing aids exist. Individuals who benefitted from hearing aids showed decreased N2 amplitudes compared with those who did not. N2 amplitude is associated with greater suppression of background noise while processing speech.

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Objective hearing threshold estimation in children with auditory neuropathy spectrum disorder

Teagle

Roush

et al. 2013

The Laryngoscope

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Speech identification and cortical potentials in individuals with auditory neuropathy

Abstract: Background: Present study investigated the relationship between speech identification scores in quiet and parameters of cortical potentials (latency of P1, N1, and P2; and amplitude of N1/P2) in individuals with auditory neuropathy.

Cited by 47 publications

References 18 publications

Auditory N1-P2 Cortical Event Related Potentials in Auditory Neuropathy Spectrum Disorder Patients

Auditory N1-P2 Cortical Event Related Potentials in Auditory Neuropathy Spectrum Disorder Patients

Cortical Evoked Potentials and Hearing Aids in Individuals with Auditory Dys-Synchrony

Objective hearing threshold estimation in children with auditory neuropathy spectrum disorder

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