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Outer hair cell active force generation in the cochlear environment
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10.1121/1.2776154
/content/asa/journal/jasa/122/4/10.1121/1.2776154
http://aip.metastore.ingenta.com/content/asa/journal/jasa/122/4/10.1121/1.2776154

Figures

Image of FIG. 1.
FIG. 1.

(a) Sketch of outer hair cell and components of the cochlear environment affecting the cell’s active force production, and (b) proposed model of outer hair cell’s active force production. Left panel: Cell vibration is constrained by the upper tectorial membrane/reticular lamina and lower basilar membrane/Deiters’s cell complexes; the cell wall interacts with the internal (cytosol) and external (perilymph) viscous fluids. Right panel: A representative cut from the cell wall under the action of electric field (arrows) determined by the transmembrane potential (the difference between the membrane (receptor) potential, , and extracellular potential, ). and are the resultants in the wall.

Image of FIG. 2.
FIG. 2.

Sketch of the cell strain due to the relative displacements, , and , of the tectorial membrane/reticular lamina and basilar membrane/Deiters’ cell complexes ( is the original length of the cell).

Image of FIG. 3.
FIG. 3.

Amplitude and phase of the active force [(a) and (b), respectively] and transmembrane potential [(c) and (d), respectively] in the high-frequency (between 15 and ) region of the cochlea. The presented results correspond to a constant maximal displacement of the basilar membrane . Each characteristic is presented in four versions: crossed lines (RC-approach), dotted lines ( properties of the membrane), dashed lines ( properties of the channels), and solid lines (full model, including the extracellular potential).

Image of FIG. 4.
FIG. 4.

(a) Amplitude and phase of the force per unit transmembrane potential in the high-frequency (between 15 and ) region of the cochlea, and (b) the transmembrane potential from low to high frequencies. The potential is presented in four versions: crossed lines (RC-approach), dotted lines ( properties of the membrane), dashed lines ( properties of the channels), and solid lines (full model, including the extracellular potential).

Image of FIG. 5.
FIG. 5.

Effect of the basilar membrane tuning for . Amplitude and phase of the active force [(a) and (b), respectively] and transmembrane potential [(c) and (d), respectively] in the high-frequency (between 15 and ) region of the cochlea. The presented results correspond to the local maximal displacement of the basilar membrane of . Each characteristic is presented in four versions: crossed lines (RC-approach), dotted lines ( properties of the membrane), dashed lines ( properties of the channels), and solid lines (full model, including the extracellular potential).

Image of FIG. 6.
FIG. 6.

Effect of the basilar membrane tuning for . Amplitude and phase of the active force [(a) and (b), respectively] and transmembrane potential [(c) and (d), respectively] in the high-frequency (between 15 and ) region of the cochlea. The presented results correspond to the local maximal displacement of the basilar membrane of . Each characteristic is presented in four versions: crossed lines (RC-approach), dotted lines ( properties of the membrane), dashed lines ( properties of the channels), and solid lines (full model, including the extracellular potential).

Tables

Generic image for table
TABLE I.

Model parameters of mechanical nature.

Generic image for table
TABLE II.

Model parameters of electrical of mechanoelectrical nature.

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/content/asa/journal/jasa/122/4/10.1121/1.2776154
2007-10-01
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Outer hair cell active force generation in the cochlear environment
http://aip.metastore.ingenta.com/content/asa/journal/jasa/122/4/10.1121/1.2776154
10.1121/1.2776154
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