Mismatch negativity in children : reference values
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Publication Date: | 2019 |
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Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UFRGS |
Download full: | http://hdl.handle.net/10183/195057 |
Summary: | Introduction The Mismatch Negativity (MMN) auditory evoked potential evaluation is a promising procedure to assess objectively the ability of auditory discrimination. Objective To characterize the latency and amplitude values of MMN in children with normal auditory thresholds and without auditory complaints. Methods Children between 5 and 11 years old participated in the present study. All participants underwent acoustic immittance measurements and tonal and vocal audiometry. The MMN was recorded with the MASBE ATC Plus system (Contronic, Pelotas, RS, Brazil). The electrodes were fixed in Fz (active electrode), Fpz (ground electrode) and in M2 and M1 (references electrodes). The intensity used was 80 dBHL, the frequent stimulus was 1,000 Hz and the rare stimulus was 2,000 Hz. The stimuli were presented in both ears separately. Results For the female group, the mean latencies and amplitude of MMN were 177.3 ms and 5.01 μV in the right ear (RE) and 182.4 ms and 5.39 μV in the left ear (LE). In the male group, the mean latencies were 194.4 ms in the RE and 183.6 ms in the LE, with an amplitude of 5.11 μV in the RE and 5.83 μV in the LE. There was no statistically significant difference between ears (p ¼ 0.867 - latency and p ¼ 0.178 - amplitude), age (p > 0.20) and the gender of the participants (p > 0.05). Conclusion Using the described protocol, the mean latency value of MMN was 184.0 ms for RE and 182.9 ms for LE, and the amplitude was 5.05 μV and 5.56 μV for the left and right ears, respective. |
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Ferreira, Dulce AzevedoSleifer, PricilaBueno, Claudine DevicariCosta, Sady Selaimen da2019-06-05T02:33:12Z20191809-4864http://hdl.handle.net/10183/195057001092725Introduction The Mismatch Negativity (MMN) auditory evoked potential evaluation is a promising procedure to assess objectively the ability of auditory discrimination. Objective To characterize the latency and amplitude values of MMN in children with normal auditory thresholds and without auditory complaints. Methods Children between 5 and 11 years old participated in the present study. All participants underwent acoustic immittance measurements and tonal and vocal audiometry. The MMN was recorded with the MASBE ATC Plus system (Contronic, Pelotas, RS, Brazil). The electrodes were fixed in Fz (active electrode), Fpz (ground electrode) and in M2 and M1 (references electrodes). The intensity used was 80 dBHL, the frequent stimulus was 1,000 Hz and the rare stimulus was 2,000 Hz. The stimuli were presented in both ears separately. Results For the female group, the mean latencies and amplitude of MMN were 177.3 ms and 5.01 μV in the right ear (RE) and 182.4 ms and 5.39 μV in the left ear (LE). In the male group, the mean latencies were 194.4 ms in the RE and 183.6 ms in the LE, with an amplitude of 5.11 μV in the RE and 5.83 μV in the LE. There was no statistically significant difference between ears (p ¼ 0.867 - latency and p ¼ 0.178 - amplitude), age (p > 0.20) and the gender of the participants (p > 0.05). Conclusion Using the described protocol, the mean latency value of MMN was 184.0 ms for RE and 182.9 ms for LE, and the amplitude was 5.05 μV and 5.56 μV for the left and right ears, respective.application/pdfengInternational Archives of Otorhinolaryngology. São Paulo, SP. Vol. 23, n. 2 (2019), p. 142-146CriançaEletrofisiologiaPotenciais evocados auditivosFonoaudiologiaAuditory evoked potentialElectrophysiologyChildrenMismatch negativity in children : reference valuesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001092725.pdf.txt001092725.pdf.txtExtracted Texttext/plain30092http://www.lume.ufrgs.br/bitstream/10183/195057/2/001092725.pdf.txtc2bbf38911f2ce836295b9b2582e410bMD52ORIGINAL001092725.pdfTexto completo (inglês)application/pdf146315http://www.lume.ufrgs.br/bitstream/10183/195057/1/001092725.pdf70af0b6dd183aeb04f9de817a0260c41MD5110183/1950572019-06-06 02:34:51.652103oai:www.lume.ufrgs.br:10183/195057Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2019-06-06T05:34:51Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Mismatch negativity in children : reference values |
title |
Mismatch negativity in children : reference values |
spellingShingle |
Mismatch negativity in children : reference values Ferreira, Dulce Azevedo Criança Eletrofisiologia Potenciais evocados auditivos Fonoaudiologia Auditory evoked potential Electrophysiology Children |
title_short |
Mismatch negativity in children : reference values |
title_full |
Mismatch negativity in children : reference values |
title_fullStr |
Mismatch negativity in children : reference values |
title_full_unstemmed |
Mismatch negativity in children : reference values |
title_sort |
Mismatch negativity in children : reference values |
author |
Ferreira, Dulce Azevedo |
author_facet |
Ferreira, Dulce Azevedo Sleifer, Pricila Bueno, Claudine Devicari Costa, Sady Selaimen da |
author_role |
author |
author2 |
Sleifer, Pricila Bueno, Claudine Devicari Costa, Sady Selaimen da |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Ferreira, Dulce Azevedo Sleifer, Pricila Bueno, Claudine Devicari Costa, Sady Selaimen da |
dc.subject.por.fl_str_mv |
Criança Eletrofisiologia Potenciais evocados auditivos Fonoaudiologia |
topic |
Criança Eletrofisiologia Potenciais evocados auditivos Fonoaudiologia Auditory evoked potential Electrophysiology Children |
dc.subject.eng.fl_str_mv |
Auditory evoked potential Electrophysiology Children |
description |
Introduction The Mismatch Negativity (MMN) auditory evoked potential evaluation is a promising procedure to assess objectively the ability of auditory discrimination. Objective To characterize the latency and amplitude values of MMN in children with normal auditory thresholds and without auditory complaints. Methods Children between 5 and 11 years old participated in the present study. All participants underwent acoustic immittance measurements and tonal and vocal audiometry. The MMN was recorded with the MASBE ATC Plus system (Contronic, Pelotas, RS, Brazil). The electrodes were fixed in Fz (active electrode), Fpz (ground electrode) and in M2 and M1 (references electrodes). The intensity used was 80 dBHL, the frequent stimulus was 1,000 Hz and the rare stimulus was 2,000 Hz. The stimuli were presented in both ears separately. Results For the female group, the mean latencies and amplitude of MMN were 177.3 ms and 5.01 μV in the right ear (RE) and 182.4 ms and 5.39 μV in the left ear (LE). In the male group, the mean latencies were 194.4 ms in the RE and 183.6 ms in the LE, with an amplitude of 5.11 μV in the RE and 5.83 μV in the LE. There was no statistically significant difference between ears (p ¼ 0.867 - latency and p ¼ 0.178 - amplitude), age (p > 0.20) and the gender of the participants (p > 0.05). Conclusion Using the described protocol, the mean latency value of MMN was 184.0 ms for RE and 182.9 ms for LE, and the amplitude was 5.05 μV and 5.56 μV for the left and right ears, respective. |
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2019 |
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International Archives of Otorhinolaryngology. São Paulo, SP. Vol. 23, n. 2 (2019), p. 142-146 |
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