The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level

Ipsilateral and contralateral recording of tone burst evoked post-auricular muscle response (PAMR) were recorded in 55 adults (20 with normal hearing, 15 with conductive hearing loss and 20 with sensorineural hearing loss) to investigate the use of PAMR in predicting hearing level. In the first p...

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Main Author:	Abdullah, Rosninda
Format:	Thesis
Language:	English
Published:	2015
Subjects:	RF Otorhinolaryngology
Online Access:	http://eprints.usm.my/40799/1/Dr._Rosninda_Abdullah-24_pages.pdf
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id	my-usm-ep.40799
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spelling	my-usm-ep.407992018-07-16T01:30:40Z The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level 2015 Abdullah, Rosninda RF Otorhinolaryngology Ipsilateral and contralateral recording of tone burst evoked post-auricular muscle response (PAMR) were recorded in 55 adults (20 with normal hearing, 15 with conductive hearing loss and 20 with sensorineural hearing loss) to investigate the use of PAMR in predicting hearing level. In the first phase of this study, ipsilateral PAMR were elicited with three stimulus rates (6, 11 and 17/s) at several intensity levels (60, 40, 20 dB SL and at thresholds level) and at four octave frequencies (500, 1000, 2000 and 4000 Hz). In the second phase, thresholds level of ipsilateral and contralateral recordings of PAMR were recorded in normal, conductive and sensorineural hearing loss group. The findings of the first phase showed most of the PAMR were biphasic with the first peak latency of between 13.1 and 17.7 ms, while the second peak latency occurred between 16.7 and 22.2 ms, depending on the stimulus intensity, tone burst frequency, and post auricular muscle tone. There were no significant difference of PAMR peaks components (latency and amplitude) as the stimulus rates increased from 6 to 17/s (P>0.05), except at 500 Hz (P=0.03). The correlation analysis showed the best correlation value between PAMR and PTA thresholds at stimulus rate of 11/s (ICC=0.62-0.82) at frequency of 500, 1000 and 4000 Hz. In the second phase, the correlation between PAMR and PTA thresholds were the highest in SNHL group (ICC=0.81-0.93), followed by CHL group (ICC=0.77-0.94) and normal hearing group. Statistically, contralateral recording of PAMR showed lower thresholds than ipsilateral recording, particularly at higher frequencies. To conclude, the hearing thresholds obtained by PAMR were within 20 dB SL across the test frequencies with better estimates at the higher tone burst frequency (4 kHz) for both modes of stimulation (ipsilateral and contralateral). The findings of the current study demonstrate the ability of PAMR in predicting behavioural hearing levels among normal and hearing impaired adults. 2015 Thesis http://eprints.usm.my/40799/ http://eprints.usm.my/40799/1/Dr._Rosninda_Abdullah-24_pages.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Perubatan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	RF Otorhinolaryngology
spellingShingle	RF Otorhinolaryngology Abdullah, Rosninda The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
description	Ipsilateral and contralateral recording of tone burst evoked post-auricular muscle response (PAMR) were recorded in 55 adults (20 with normal hearing, 15 with conductive hearing loss and 20 with sensorineural hearing loss) to investigate the use of PAMR in predicting hearing level. In the first phase of this study, ipsilateral PAMR were elicited with three stimulus rates (6, 11 and 17/s) at several intensity levels (60, 40, 20 dB SL and at thresholds level) and at four octave frequencies (500, 1000, 2000 and 4000 Hz). In the second phase, thresholds level of ipsilateral and contralateral recordings of PAMR were recorded in normal, conductive and sensorineural hearing loss group. The findings of the first phase showed most of the PAMR were biphasic with the first peak latency of between 13.1 and 17.7 ms, while the second peak latency occurred between 16.7 and 22.2 ms, depending on the stimulus intensity, tone burst frequency, and post auricular muscle tone. There were no significant difference of PAMR peaks components (latency and amplitude) as the stimulus rates increased from 6 to 17/s (P>0.05), except at 500 Hz (P=0.03). The correlation analysis showed the best correlation value between PAMR and PTA thresholds at stimulus rate of 11/s (ICC=0.62-0.82) at frequency of 500, 1000 and 4000 Hz. In the second phase, the correlation between PAMR and PTA thresholds were the highest in SNHL group (ICC=0.81-0.93), followed by CHL group (ICC=0.77-0.94) and normal hearing group. Statistically, contralateral recording of PAMR showed lower thresholds than ipsilateral recording, particularly at higher frequencies. To conclude, the hearing thresholds obtained by PAMR were within 20 dB SL across the test frequencies with better estimates at the higher tone burst frequency (4 kHz) for both modes of stimulation (ipsilateral and contralateral). The findings of the current study demonstrate the ability of PAMR in predicting behavioural hearing levels among normal and hearing impaired adults.
format	Thesis
qualification_level	Master's degree
author	Abdullah, Rosninda
author_facet	Abdullah, Rosninda
author_sort	Abdullah, Rosninda
title	The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
title_short	The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
title_full	The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
title_fullStr	The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
title_full_unstemmed	The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
title_sort	use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Perubatan
publishDate	2015
url	http://eprints.usm.my/40799/1/Dr._Rosninda_Abdullah-24_pages.pdf
_version_	1747820824842207232

The use of ipsilateral and contralaterial recording of post-auricular muscle response in predicting hearing level

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