Long latency auditory evoked potentials in children with cochlear implants: systematic review

Silva, Liliane Aparecida Fagundes; Couto, Maria Inês Vieira; Matas, Carla Gentile; Carvalho, Ana Claudia Martinho de

doi:10.1590/s2317-17822013.05000009

Cited by 20 publications

(28 citation statements)

References 23 publications

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“…Although P1 component latency values also differ greatly in the literature [ 63 ], the data obtained in this study in both evaluations corroborate several findings reported by a study that evaluated P1 component latency in a group of children with a maximum age of 3 years and 5 months who received a CI and observed mean values of 378.18 ms at the time of activation and 137.5 ms after 12–18 months of CI use [ 19 ]. Another study monitored 10 children aged between one and five years and observed latency values of 313 ms in the pre-activation period and 259 and 177 ms after three and six months of CI use, respectively [ 64 ].…”

Section: Discussionsupporting

confidence: 88%

Cortical maturation in children with cochlear implants: Correlation between electrophysiological and behavioral measurement

et al. 2017

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Central auditory pathway maturation in children depends on auditory sensory stimulation. The objective of the present study was to monitor the cortical maturation of children with cochlear implants using electrophysiological and auditory skills measurements. The study was longitudinal and consisted of 30 subjects, 15 (8 girls and 7 boys) of whom had a cochlear implant, with a mean age at activation time of 36.4 months (minimum, 17 months; maximum, 66 months), and 15 of whom were normal-hearing children who were matched based on gender and chronological age. The auditory and speech skills of the children with cochlear implants were evaluated using GASP, IT-MAIS and MUSS measures. Both groups underwent electrophysiological evaluation using long-latency auditory evoked potentials. Each child was evaluated at three and nine months after cochlear implant activation, with the same time interval adopted for the hearing children. The results showed improvements in auditory and speech skills as measured by IT-MAIS and MUSS. Similarly, the long-latency auditory evoked potential evaluation revealed a decrease in P1 component latency; however, the latency remained significantly longer than that of the hearing children, even after nine months of cochlear implant use. It was observed that a shorter P1 latency corresponded to more evident development of auditory skills. Regarding auditory behavior, it was observed that children who could master the auditory skill of discrimination showed better results in other evaluations, both behavioral and electrophysiological, than those who had mastered only the speech-detection skill. Therefore, cochlear implant auditory stimulation facilitated auditory pathway maturation, which decreased the latency of the P1 component and advanced the development of auditory and speech skills. The analysis of the long-latency auditory evoked potentials revealed that the P1 component was an important biomarker of auditory development during the rehabilitation process.

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Section: Discussionsupporting

confidence: 88%

Cortical maturation in children with cochlear implants: Correlation between electrophysiological and behavioral measurement

et al. 2017

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“…In the present study, the CAEP waveforms were recorded using tone burst and speech stimuli in Malaysian children. The CAEP latencies and amplitudes obtained are consistent with those of previous studies and are within the published ranges [4,17,18]. The P1, N1, and P2 peaks of the CAEP reflect the encoding of potentially detectable sound by the neurons of the auditory cortex [19,20].…”

Section: Discussionsupporting

confidence: 89%

Effects of Age and Type of Stimulus on the Cortical Auditory Evoked Potential in Healthy Malaysian Children

et al. 2020

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Background and Objectives: The cortical auditory evoked potential (CAEP) is a useful objective test for diagnosing hearing loss and auditory disorders. Prior to its clinical applications in the pediatric population, the possible influences of fundamental variables on the CAEP should be studied. The aim of the present study was to determine the effects of age and type of stimulus on the CAEP waveforms. Subjects and Methods: Thirty-five healthy Malaysian children aged 4 to 12 years participated in this repeated-measures study. The CAEP waveforms were recorded from each child using a 1 kHz tone burst and the speech syllable /ba/. Latencies and amplitudes of P1, N1, and P2 peaks were analyzed accordingly. Results: Significant negative correlations were found between age and speech-evoked CAEP latency for each peak (p< 0.05). However, no significant correlations were found between age and tone-evoked CAEP amplitudes and latencies (p>0.05). The speech syllable /ba/ produced a higher mean P1 amplitude than the 1 kHz tone burst (p=0.001). Conclusions: The CAEP latencies recorded with the speech syllable became shorter with age. While both tone-burst and speech stimuli were appropriate for recording the CAEP, significantly bigger amplitudes were found in speech-evoked CAEP. The preliminary normative CAEP data provided in the present study may be beneficial for clinical and research applications in Malaysian children.

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“…It is essential to highlight that the N2 component is involved in pre-attention mechanisms related to communication [29]. The N2 component is also related to obligatory (exogenous) cortical processes.…”

Section: Discussionmentioning

confidence: 99%

Association between heart rhythm and cortical sound processing

2018

J. Integr. Neurosci.

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Processing of sound signals is an important factor for conscious human communication and such sound signals may be assessed through cortical auditory evoked potentials. Heart rate variability provides information about heart rate autonomic regulation. The association between resting heart rate variability and cortical auditory evoked potentials was investigated. Resting heart rate variability in the time and frequency domain and the cortical auditory evoked potential components were investigated. Subjects remained at rest for 10 minutes for recording of heart rate variability. Cortical auditory evoked potential examinations were then undertaken through frequency and duration protocols in both ears. Linear regression indicated that the amplitude of the N2 wave of the cortical auditory evoked potentials in the left ear (not right ear) was significantly influenced by the standard deviation of normal-to-normal heart beats (17.7%) and percentage of adjacent heart beat intervals with a difference of duration greater than 50 milliseconds (25.3%) for the time domain heart rate variability indices in the frequency protocol. In the duration protocol and in the left ear the latency of the P2 wave was significantly influenced by low (20.8%) and high frequency bands in normalized units (21%) and low frequency/high frequency ratio (22.4%) indices of heart rate variability spectral analysis. The latency of the N2 wave was significantly influenced bylow frequency (25.8%), high frequency (25.9%) and low frequency/high frequency ratio (28.8%). In conclusion, it is proposed that resting heart rhythm is associated with thalamo-cortical, cortical-cortical and auditory cortex pathways involved with auditory processing in the right hemisphere.

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Long latency auditory evoked potentials in children with cochlear implants: systematic review

Cited by 20 publications

References 23 publications

Cortical maturation in children with cochlear implants: Correlation between electrophysiological and behavioral measurement

Cortical maturation in children with cochlear implants: Correlation between electrophysiological and behavioral measurement

Effects of Age and Type of Stimulus on the Cortical Auditory Evoked Potential in Healthy Malaysian Children

Association between heart rhythm and cortical sound processing

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