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the claim

Outer hair cells actively amplify the traveling wave in the cochlea.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that outer hair cells actively amplify the traveling wave in the cochlea?

Yes. Multiple studies and reviews confirm that outer hair cells utilize active electromotility (driven by the motor protein prestin) to amplify the fluid traveling wave along the cochlea, enhancing mammalian hearing sensitivity and frequency selectivity.

Verdict: SUPPORTED · 8 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently support the claim that outer hair cells actively amplify the traveling wave in the cochlea, detailing the biophysical and molecular mechanisms (such as prestin electromotility) responsible for this cochlear amplification.

Evidence for · 8
Cochlear Amplification in the Short-Wave Region by Outer Hair Cells changing Organ-of-Corti area to Amplify the Fluid Traveling Wave
2022
Discusses how outer-hair-cell motility produces traveling-wave amplification in the cochlea.
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Guinan, J. (2022). Cochlear Amplification in the Short-Wave Region by Outer Hair Cells changing Organ-of-Corti area to Amplify the Fluid Traveling Wave. doi.org. https://doi.org/10.1016/j.heares.2022.108641

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More for · 7
Megahertz Sampling of Prestin (SLC26a5) Voltage-Sensor Charge Movements in Outer Hair Cell Membranes Reveals Ultrasonic Activity that May Support Electromotility and Cochlear Amplification
2023
Notes that prestin electromotility in outer hair cells powers cochlear amplification.
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Santos-Sacchi, J., Bai, J., & Navaratnam, D. (2023). Megahertz Sampling of Prestin (SLC26a5) Voltage-Sensor Charge Movements in Outer Hair Cell Membranes Reveals Ultrasonic Activity that May Support Electromotility and Cochlear Amplification. doi.org. https://doi.org/10.1523/JNEUROSCI.2033-22.2023

Elevator-like movements of prestin mediate outer hair cell electromotility
2023
Identifies elevator-like movements of prestin in outer hair cells as mediating cochlear amplification.
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Kuwabara, M. F., Haddad, B. G., Lenz-Schwab, D., Hartmann, J., Longo, P., Huckschlag, B., Fuss, A., Questino, A., Berger, T. K., Machtens, J., & Oliver, D. (2023). Elevator-like movements of prestin mediate outer hair cell electromotility. doi.org. https://doi.org/10.1038/s41467-023-42489-8

A Gap-Junction Mutation Reveals That Outer Hair Cell Extracellular Receptor Potentials Drive High-Frequency Cochlear Amplification
2022
Demonstrates that outer hair cell potentials drive high-frequency cochlear amplification.
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Levic, S., Lukashkina, V. A., Simões, P., Lukashkin, A., & Russell, I. (2022). A Gap-Junction Mutation Reveals That Outer Hair Cell Extracellular Receptor Potentials Drive High-Frequency Cochlear Amplification. doi.org. https://doi.org/10.1523/jneurosci.2241-21.2022

An outer hair cell-powered global hydromechanical mechanism for cochlear amplification
2021
Examines the outer hair cell-powered mechanism that drives cochlear amplification.
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He, W., Burwood, G., Fridberger, A., Nuttall, A., & Ren, T. (2021). An outer hair cell-powered global hydromechanical mechanism for cochlear amplification. doi.org. https://doi.org/10.1016/j.heares.2021.108407

MYH1 deficiency disrupts outer hair cell electromotility, resulting in hearing loss
2024
Links outer hair cell electromotility via prestin function directly to the regulation of cochlear amplification.
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Jung, J., Joo, S., Min, H., Roh, J., Kim, K. A., Ma, J., Rim, J., Kim, J., Kim, S. J., Jang, S. H., Koh, Y. I., Kim, H., Lee, H., Kim, B., Gee, H., Bok, J., Choi, J., & Seong, J. (2024). MYH1 deficiency disrupts outer hair cell electromotility, resulting in hearing loss. doi.org. https://doi.org/10.1038/s12276-024-01338-4

Amplification through local critical behavior in the mammalian cochlea.
2025
Attributes mammalian hearing sensitivity to an active process powered by outer hair cells that energizes the traveling wave.
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RG, A., F, G., B, F., & AJ, H. (2025). Amplification through local critical behavior in the mammalian cochlea.. doi.org. https://doi.org/10.1073/pnas.2503389122

Folding of prestin’s anion-binding site and the mechanism of outer hair cell electromotility
2023
Connects prestin's voltage-dependent conformational changes to outer hair cell electromotility and cochlear amplification.
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Lin, X., Haller, P., Bavi, N., Faruk, N., Perozo, E., & Sosnick, T. S. (2023). Folding of prestin’s anion-binding site and the mechanism of outer hair cell electromotility. doi.org. https://doi.org/10.7554/eLife.89635

What does the evidence say?

The retrieved papers consistently support the claim that outer hair cells actively amplify the traveling wave in the cochlea, detailing the biophysical and molecular mechanisms (such as prestin electromotility) responsible for this cochlear amplification.

Receipt History
first checked06 Aug 2026
judged → SUPPORTED · 8306 Aug 2026
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