VEMP using a new low-frequency bone conduction transducer

Bo Håkansson,1 Karl-Johan Fredén Jansson,1 Tomas Tengstrand,2 Leif Johannsen,3 Måns Eeg-Olofsson,4 Cristina Rigato,1 Elisabeth Dahlström,4 Sabine Reinfeldt1 1Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden; 2Departm...

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Autores principales:	Håkansson B, Fredén Jansson KJ, Tengstrand T, Johannsen L, Eeg-Olofsson M, Rigato C, Dahlström E, Reinfeldt S
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	Vestibular investigation Air conduction Bone conduction VEMP cVEMP oVEMP Medical technology R855-855.5
Acceso en línea:	https://doaj.org/article/fc64bd14bb7349b59873804af524a9c6
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spelling	oai:doaj.org-article:fc64bd14bb7349b59873804af524a9c62021-12-02T08:07:21ZVEMP using a new low-frequency bone conduction transducer1179-1470https://doaj.org/article/fc64bd14bb7349b59873804af524a9c62018-09-01T00:00:00Zhttps://www.dovepress.com/vemp-using-a-new-low-frequency-bone-conduction-transducer-peer-reviewed-article-MDERhttps://doaj.org/toc/1179-1470Bo Håkansson,1 Karl-Johan Fredén Jansson,1 Tomas Tengstrand,2 Leif Johannsen,3 Måns Eeg-Olofsson,4 Cristina Rigato,1 Elisabeth Dahlström,4 Sabine Reinfeldt1 1Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden; 2Department of Audiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; 3Ortofon A/S, Nakskov, Denmark; 4Department of Otolaryngology, Head and Neck Surgery, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden Objective: A new prototype bone conduction (BC) transducer B250, with an emphasized low-frequency response, is evaluated in vestibular evoked myogenic potential (VEMP) investigations. The aim was to compare cervical (cVEMP) and ocular (oVEMP) responses using tone bursts at 250 and 500 Hz with BC stimulation using the B250 and the conventional B81 transducer and by using air conduction (AC) stimulation.Methods: Three normal subjects were investigated in a pilot study. BC stimulation was applied to the mastoids in cVEMP, and both mastoid and forehead in oVEMP investigations.Results: BC stimulation was found to reach VEMP thresholds at considerably lower hearing levels than in AC stimulation (30–40 dB lower oVEMP threshold at 250 Hz). Three or more cVEMP and oVEMP responses at consecutive 5 dB increasing mastoid stimulation levels were only obtained in all subjects using the B250 transducer at 250 Hz. Similar BC thresholds were obtained for both ipsilateral and contralateral mastoid stimulation. Forehead stimulation, if needed, may require a more powerful vibration output.Conclusion: Viable VEMP responses can be obtained at a considerably lower hearing level with BC stimulation than by AC stimulation. The cVEMP and oVEMP responses were similar when measured on one side and with the B250 attached to both ipsilateral and contralateral mastoids. Keywords: vestibular investigation, air conduction, bone conduction, VEMP, cVEMP, oVEMPHåkansson BFredén Jansson KJTengstrand TJohannsen LEeg-Olofsson MRigato CDahlström EReinfeldt SDove Medical PressarticleVestibular investigationAir conductionBone conductionVEMPcVEMPoVEMPMedical technologyR855-855.5ENMedical Devices: Evidence and Research, Vol Volume 11, Pp 301-312 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Vestibular investigation Air conduction Bone conduction VEMP cVEMP oVEMP Medical technology R855-855.5
spellingShingle	Vestibular investigation Air conduction Bone conduction VEMP cVEMP oVEMP Medical technology R855-855.5 Håkansson B Fredén Jansson KJ Tengstrand T Johannsen L Eeg-Olofsson M Rigato C Dahlström E Reinfeldt S VEMP using a new low-frequency bone conduction transducer
description	Bo Håkansson,1 Karl-Johan Fredén Jansson,1 Tomas Tengstrand,2 Leif Johannsen,3 Måns Eeg-Olofsson,4 Cristina Rigato,1 Elisabeth Dahlström,4 Sabine Reinfeldt1 1Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden; 2Department of Audiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; 3Ortofon A/S, Nakskov, Denmark; 4Department of Otolaryngology, Head and Neck Surgery, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden Objective: A new prototype bone conduction (BC) transducer B250, with an emphasized low-frequency response, is evaluated in vestibular evoked myogenic potential (VEMP) investigations. The aim was to compare cervical (cVEMP) and ocular (oVEMP) responses using tone bursts at 250 and 500 Hz with BC stimulation using the B250 and the conventional B81 transducer and by using air conduction (AC) stimulation.Methods: Three normal subjects were investigated in a pilot study. BC stimulation was applied to the mastoids in cVEMP, and both mastoid and forehead in oVEMP investigations.Results: BC stimulation was found to reach VEMP thresholds at considerably lower hearing levels than in AC stimulation (30–40 dB lower oVEMP threshold at 250 Hz). Three or more cVEMP and oVEMP responses at consecutive 5 dB increasing mastoid stimulation levels were only obtained in all subjects using the B250 transducer at 250 Hz. Similar BC thresholds were obtained for both ipsilateral and contralateral mastoid stimulation. Forehead stimulation, if needed, may require a more powerful vibration output.Conclusion: Viable VEMP responses can be obtained at a considerably lower hearing level with BC stimulation than by AC stimulation. The cVEMP and oVEMP responses were similar when measured on one side and with the B250 attached to both ipsilateral and contralateral mastoids. Keywords: vestibular investigation, air conduction, bone conduction, VEMP, cVEMP, oVEMP
format	article
author	Håkansson B Fredén Jansson KJ Tengstrand T Johannsen L Eeg-Olofsson M Rigato C Dahlström E Reinfeldt S
author_facet	Håkansson B Fredén Jansson KJ Tengstrand T Johannsen L Eeg-Olofsson M Rigato C Dahlström E Reinfeldt S
author_sort	Håkansson B
title	VEMP using a new low-frequency bone conduction transducer
title_short	VEMP using a new low-frequency bone conduction transducer
title_full	VEMP using a new low-frequency bone conduction transducer
title_fullStr	VEMP using a new low-frequency bone conduction transducer
title_full_unstemmed	VEMP using a new low-frequency bone conduction transducer
title_sort	vemp using a new low-frequency bone conduction transducer
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/fc64bd14bb7349b59873804af524a9c6
work_keys_str_mv	AT hakanssonb vempusinganewlowfrequencyboneconductiontransducer AT fredenjanssonkj vempusinganewlowfrequencyboneconductiontransducer AT tengstrandt vempusinganewlowfrequencyboneconductiontransducer AT johannsenl vempusinganewlowfrequencyboneconductiontransducer AT eegolofssonm vempusinganewlowfrequencyboneconductiontransducer AT rigatoc vempusinganewlowfrequencyboneconductiontransducer AT dahlstrome vempusinganewlowfrequencyboneconductiontransducer AT reinfeldts vempusinganewlowfrequencyboneconductiontransducer
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VEMP using a new low-frequency bone conduction transducer

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