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Ear Nose Throat J. 1997 Apr;76(4):213-8, 220, 222.

Scanning laser Doppler vibrometry of the middle ear ossicles.

Author information

1
Symphonix Devices, Inc., San Jose, CA 94037, USA.

Abstract

This paper describes measurements of the vibratory modes of the middle ear ossicles made with a scanning laser Doppler vibrometer. Previous studies of the middle ear ossicles with single-point laser Doppler measurements have raised questions regarding the vibrational modes of the ossicular chain. Single-point analysis methods do not have the ability to measure multiple points on the ossicles and, consequently, have limited ability to simultaneously record relative phase information at these points. Using a Polytec Model PSV-100, detailed measurements of the ossicular chain have been completed in the human temporal bone model. This model, when driven with a middle ear transducer, provides detailed three-dimensional data of the vibrational patterns of the middle ear ossicles. Implications for middle ear implantable devices are discussed.

PMID:
9127520
[Indexed for MEDLINE]

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