ArticleJournal of the Association for Research in Otolaryngology : JARO2015
Energy Flux in the Cochlea: Evidence Against Power Amplification of the Traveling Wave.
Article in Journal of the Association for Research in Otolaryngology : JARO, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 34 citations in OpenAlex.
- Amplification through local critical behavior in the mammalian cochlea.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Intracochlear overdrive: Characterizing nonlinear wave amplification in the mouse apex.The Journal of the Acoustical Society of America · 2023Article
- Assessment of cochlear synaptopathy by electrocochleography to low frequencies in a preclinical model and human subjects.Frontiers in neurology · 2023Article
- Interplay between traveling wave propagation and amplification at the apex of the mouse cochlea.Biophysical journal · 2022Article
- Tuned vibration modes in a miniature hearing organ: Insights from the bushcricket.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- State dependent effects on the frequency response of prestin's real and imaginary components of nonlinear capacitance.Scientific reports · 2021Article
- Interactions between Passive and Active Vibrations in the Organ of Corti In Vitro.Biophysical journal · 2020Article
- Article
- Timing of the reticular lamina and basilar membrane vibration in living gerbil cochleae.eLife · 2018Article
- Vibration hotspots reveal longitudinal funneling of sound-evoked motion in the mammalian cochlea.Nature communications · 2018Article
- Dynamics of cochlear nonlinearity: Automatic gain control or instantaneous damping?The Journal of the Acoustical Society of America · 2017Article
- Modeling signal propagation in the human cochlea.The Journal of the Acoustical Society of America · 2017Article
- Hair Cell Transduction, Tuning, and Synaptic Transmission in the Mammalian Cochlea.Comprehensive Physiology · 2017Review
- Reticular lamina and basilar membrane vibrations in living mouse cochleae.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Cochlear Outer-Hair-Cell Power Generation and Viscous Fluid Loss.Scientific reports · 2016Article
- Article
- Intracochlear Electrocochleography: Response Patterns During Cochlear Implantation and Hearing Preservation.Ear and hearingArticle
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Traveling waves in the inner ear exhibit an amplitude peak that shifts with frequency. The peaking is commonly believed to rely on motile processes that amplify the wave by inserting energy. We recorded the vibrations at adjacent positions on the basilar membrane in sensitive gerbil cochleae and tested the putative power amplification in two ways. First, we determined the energy flux of the traveling wave at its peak and compared it to the acoustic power entering the ear, thereby obtaining the net cochlear power gain. For soft sounds, the energy flux at the peak was 1 ± 0.6 dB less than the middle ear input power. For more intense sounds, increasingly smaller fractions of the acoustic power actually reached the peak region. Thus, we found no net power amplification of soft sounds and a strong net attenuation of intense sounds. Second, we analyzed local wave propagation on the basilar membrane. We found that the waves slowed down abruptly when approaching their peak, causing an energy densification that quantitatively matched the amplitude peaking, similar to the growth of sea waves approaching the beach. Thus, we found no local power amplification of soft sounds and strong local attenuation of intense sounds. The most parsimonious interpretation of these findings is that cochlear sensitivity is not realized by amplifying acoustic energy, but by spatially focusing it, and that dynamic compression is realized by adjusting the amount of dissipation to sound intensity.
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