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Interaction between osseous and non-osseous vibratory stimulation of the human cadaveric head
University of Zurich Hospital, Switzerland; University of Zurich, Switzerland.
University of Zurich Hospital, Switzerland; University of Zurich, Switzerland.
University of Zurich Hospital, Switzerland; University of Zurich, Switzerland.
University of Zurich Hospital, Switzerland; University of Zurich, Switzerland.
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2016 (English)In: Hearing Research, ISSN 0378-5955, E-ISSN 1878-5891, Vol. 340, 153-160 p.Article in journal (Refereed) Published
Abstract [en]

Bone conduction (BC) stimulation can be applied by vibration to the bony or skin covered skull (osseous BC), or on soft tissue such as the neck (non-osseous BC). The interaction between osseous and non osseous bone conduction pathways is assessed in this study. The relation between bone vibrations measured at the cochlear promontory and the intracranial sound pressure for stimulation directly on the dura and for stimulation at the mastoid between 0.2 and 10 kHz was compared. First, for stimulation on the dura, varying the static coupling force of the BC transducer on the dura had only a small effect on promontory vibration. Second, the presence or absence of intracranial fluid did not affect promontory vibration for stimulation on the dura. Third, stimulation on the mastoid elicited both promontory vibration and intracranial sound pressure. Stimulation on the dura caused intracranial sound pressure to a similar extent above 0.5 kHz compared to stimulation on the mastoid, while promontory vibration was less by 20-40 dB. From these findings, we conclude that intracranial sound pressure (non-osseous BC) only marginally affects bone vibrations measured on the promontory (osseous BC), whereas skull vibrations affect intracranial sound pressure. (C) 2016 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2016. Vol. 340, 153-160 p.
Keyword [en]
Bone conduction; Intracranial sound pressure; Promontory vibration; Dura stimulation; Mastoid stimulation
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:liu:diva-132677DOI: 10.1016/j.heares.2016.01.013ISI: 000386417900019PubMedID: 26807795OAI: oai:DiVA.org:liu-132677DiVA: diva2:1048268
Conference
7th International Symposium on Middle Ear Mechanics in Research and Otology (MEMRO)
Available from: 2016-11-21 Created: 2016-11-18 Last updated: 2016-11-21

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Stenfelt, Stefan
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Division of Neuro and Inflammation ScienceFaculty of Medicine and Health Sciences
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