Recovery Function of the Late Auditory Evoked Potential in Cochlear Implant Users and Normal-Hearing Listeners

Zhang, Fawen; Samy, Ravi N.; Anderson, Jill M.; Houston, Lisa

doi:10.3766/jaaa.20.7.2

Cited by 14 publications

(11 citation statements)

References 72 publications

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“…The LAEP amplitude reduction was less obvious when the ISI was longer than 8 to 10 s (Ritter et al, 1968; Zhang et al, 2009b). These studies proposed that the LAEP amplitude reduction was mainly due to neural adaptation and/or refractoriness.…”

Section: Discussionmentioning

confidence: 98%

“…ICs representing artifacts were identified and removed by visual inspection of IC properties including the waveform, 2-D voltage map, and the spectrum (Gilley et al, 2006; Debener et al, 2008). Details of CI artifact removal are provided in our previous papers (Zhang et al, 2009b; Zhang et al, 2010). After removing artifacts, the remaining components were then constructed to form the final EEG data set.…”

Section: Methodsmentioning

confidence: 99%

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Mismatch negativity and adaptation measures of the late auditory evoked potential in cochlear implant users

et al. 2011

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A better understanding of the neural correlates of large variability in cochlear implant (CI) patients’ speech performance may allow us to find solutions to further improve CI benefits. The present study examined the mismatch negativity (MMN) and the adaptation of the late auditory evoked potential (LAEP) in 10 CI users. The speech syllable /da/ and 1-kHz tone burst were used to examine the LAEP adaptation. The amount of LAEP adaptation was calculated according to the averaged N1-P2 amplitude for the LAEPs evoked by the last 3 stimuli and the amplitude evoked by the first stimulus. For the MMN recordings, the standard stimulus (1-kHz tone) and the deviant stimulus (2-kHz tone) were presented in an oddball condition. Additionally, the deviants alone were presented in a control condition. The MMN was derived by subtracting the response to the deviants in the control condition from the oddball condition. Results showed that good CI performers displayed a more prominent LAEP adaptation than moderate-to-poor performers. Speech performance was significantly correlated to the amount of LAEP adaptation for the 1-kHz tone bursts. Good performers displayed large MMNs and moderate-to-poor performers had small or absent MMNs. The abnormal electrophysiological findings in moderate-to-poor performers suggest that long-term deafness may cause damage not only at the auditory cortical level, but also at the cognitive level.

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Section: Discussionmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Mismatch negativity and adaptation measures of the late auditory evoked potential in cochlear implant users

et al. 2011

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“…ICs representing artifacts were identified and removed by visual inspection of IC properties including the waveform, 2-D voltage map, and the spectrum (Gilley et al, 2006; Debener et al, 2008). Detailed ICA procedures were provided in our previous papers (Zhang et al, 2009; Zhang et al, 2010). After removing artifacts, the remaining components were then constructed to form the final EEG dataset.…”

Section: Methodsmentioning

confidence: 99%

Cortical Encoding of Pitch Contour Changes in Cochlear Implant Users: A Mismatch Negativity Study

Zhang

Benson²,

Fu³

2013

Audiol Neurotol

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A better understanding of melodic pitch perception in cochlear implants (CIs) may guide signal processing and/or rehabilitation techniques to improve music perception and appreciation in CI patients. In this study, the mismatch negativity (MMN) in response to infrequent changes in 5-tone pitch contours was obtained in CI users and normal-hearing (NH) listeners. Melodic contour identification (MCI) was also measured. Results showed that MCI performance was poorer in CI than in NH subjects; the MMNs were missing in all CI subjects for the 1-semitone contours. The MMNs with the 5-semitone contours were observed in a smaller proportion of CI than NH subjects. Results suggest that encoding of pitch contour changes in CI users appears to be degraded, most likely due to the limited pitch cues provided by the CI and deafness-related compromise of brain substrates.

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“…In recent years, this AEP complex has been applied to CI users (e.g. Beynon et al ., 2005; Dorman et al ., 2007; Eggermont and Ponton, 2003; Firszt et al ., 2002; Jiwani et al ., 2013; Kelly et al ., 2005; McLaughlin et al ., 2013; Pantev et al ., 2006; Ponton et al ., 1996; Sharma et al ., 2014; Thai-Van et al ., 2010; Zhang et al ., 2009). The P1-N1-P2 complex is sensitive to changes in the physical features of a stimulus in a highly reliable and repeatable manner (Martin et al ., 2008; Naatanen and Picton, 1987; Stapells, 2002; Tremblay et al ., 2003).…”

Section: Introductionmentioning

confidence: 99%

A potential neurophysiological correlate of electric-acoustic pitch matching in adult cochlear implant users: Pilot data

Tan

Martin

Svirsky

2018

Cochlear Implants International

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The overall goal of this study was to identify an objective physiological correlate of electric-acoustic pitch matching in unilaterally implanted cochlear implant (CI) participants with residual hearing in the non-implanted ear. Electrical and acoustic stimuli were presented in a continuously alternating fashion across ears. The acoustic stimulus and the electrical stimulus were either matched or mismatched in pitch. Auditory evoked potentials were obtained from nine CI users. Results indicated that N1 latency was stimulus-dependent, decreasing when the acoustic frequency of the tone presented to the non-implanted ear was increased. More importantly, there was an additional decrease in N1 latency in the pitch-matched condition. These results indicate the potential utility of N1 latency as an index of pitch matching in CI users.

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Recovery Function of the Late Auditory Evoked Potential in Cochlear Implant Users and Normal-Hearing Listeners

Cited by 14 publications

References 72 publications

Mismatch negativity and adaptation measures of the late auditory evoked potential in cochlear implant users

Mismatch negativity and adaptation measures of the late auditory evoked potential in cochlear implant users

Cortical Encoding of Pitch Contour Changes in Cochlear Implant Users: A Mismatch Negativity Study

A potential neurophysiological correlate of electric-acoustic pitch matching in adult cochlear implant users: Pilot data

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