Contribution of complex stapes motion to cochlea activation

Eiber, Albrecht; Huber, Alexander; Lauxmann, Michael; Chatzimichalis, Michail; Sequeira, Damien; Sim, Jae Hoon

doi:10.1016/j.heares.2011.11.008

Cited by 20 publications

(15 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ISJ enables a relative motion in both rotational and translational modes so the location of the joint on the stapes (denoted as S 3 ) does not in general coincide with I 4 , accounting for some rotational components around the short and long axes of the SFP, described in Ref. [74]. Unlike in Wright's model, in our model the IMJ has relative translational motion too, according to experimental evidences in Ref.…”

Section: Basic Model Geometrymentioning

confidence: 51%

Model-oriented review and multi-body simulation of the ossicular chain of the human middle ear

Volandri

Puccio

Forte

et al. 2012

Medical Engineering & Physics

View full text Add to dashboard Cite

Section: Basic Model Geometrymentioning

confidence: 51%

Model-oriented review and multi-body simulation of the ossicular chain of the human middle ear

Volandri

Puccio

Forte

et al. 2012

Medical Engineering & Physics

View full text Add to dashboard Cite

“…a fluid-jet flow, which, however, results in the generation of conventional travelling waves along the cochlear partition. In this sense, the cochlear excitation in our experiments on the RW stimulation is similar to excitation due to rocking movement of the stapes, which creates only local pressure gradients/fluid motion in the cochlea [37,38] resulting, nevertheless, in generation of the travelling waves and neural excitation [39,40]. In our experiments, the near-field pressure is proportional to the acceleration of the transducer which allows effective cochlear stimulation even at extremely small RW displacements at high frequencies.…”

Section: Discussionmentioning

confidence: 62%

A novel mechanism of cochlear excitation during simultaneous stimulation and pressure relief through the round window

Weddell

Yarin

Drexl³

et al. 2014

J. R. Soc. Interface.

View full text Add to dashboard Cite

The round window (RW) membrane provides pressure relief when the cochlea is excited by sound. Here, we report measurements of cochlear function from guinea pigs when the cochlea was stimulated at acoustic frequencies by movements of a miniature magnet which partially occluded the RW. Maximum cochlear sensitivity, corresponding to subnanometre magnet displacements at neural thresholds, was observed for frequencies around 20 kHz, which is similar to that for acoustic stimulation. Neural response latencies to acoustic and RW stimulation were similar and taken to indicate that both means of stimulation resulted in the generation of conventional travelling waves along the cochlear partition. It was concluded that the relatively high impedance of the ossicles, as seen from the cochlea, enabled the region of the RW not occluded by the magnet, to act as a pressure shunt during RW stimulation. We propose that travelling waves, similar to those owing to acoustic farfield pressure changes, are driven by a jet-like, near-field component of a complex pressure field, which is generated by the magnetically vibrated RW. Outcomes of research described here are theoretical and practical design principles for the development of new types of hearing aids, which use near-field, RW excitation of the cochlea.

show abstract

“…a fluid-jet flow, which, however, results in the generation of conventional travelling waves along the cochlear partition. In this sense, cochlear excitation due to the RW stimulation in our experiments is similar to excitation due to rocking movement of the stapes, which creates only local pressure gradients/fluid motion in the cochlea [4,13] resulting, nevertheless, in generation of the travelling waves and neural excitation [5]. The near-field pressure variations will be limited to the vicinity of the RW membrane (Fig.…”

Section: Discussionmentioning

confidence: 64%

Cochlear excitation by the near-field component during stimulation through the partially occluded round window

Weddell

Yarin

Drexl³

et al. 2015

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. The round window membrane (RW) provides pressure relief when the cochlea is excited by sound. While normal function of the RW is important for effective stimulation of the cochlea through the conventional oval window route, the cochlea can be stimulated successfully in non-conventional ways (e.g. through bone conduction, through the RW, and through perforations in the cochlea's apical turn). We report measurements of cochlear function from guinea pigs when the cochlea was stimulated at acoustic frequencies by movements of a miniature magnet which partially occluded the RW. Neural response latencies to acoustic and RW stimulation were similar and taken to indicate that both means of stimulation resulted in the generation of conventional travelling waves along the cochlear partition. It was concluded that the relatively high impedance of the ossicles, as seen from the cochlea, enabled the region of the RW not occluded by the magnet, to act as a pressure shunt during RW stimulation. We propose that travelling waves, similar to those due to acoustic far-field pressure changes, are driven by a jet-like, near-field component of a complex fluidpressure field, which is generated by the magnetically vibrated RW.

show abstract

Contribution of complex stapes motion to cochlea activation

Cited by 20 publications

References 18 publications

Model-oriented review and multi-body simulation of the ossicular chain of the human middle ear

Model-oriented review and multi-body simulation of the ossicular chain of the human middle ear

A novel mechanism of cochlear excitation during simultaneous stimulation and pressure relief through the round window

Cochlear excitation by the near-field component during stimulation through the partially occluded round window

Contact Info

Product

Resources

About