Visualizing motions within the cochlea's organ of Corti and illuminating cochlear mechanics with optical coherence tomography

ES Olson, W Dong, BE Applegate, KK Charaziak… - Hearing Research, 2024 - Elsevier
Beginning in 2006, optical coherence tomography (OCT) has been adapted for use as a
vibrometer for hearing research. The application of OCT in this field, particularly for studying …

Otoacoustic emissions reveal the micromechanical role of organ-of-Corti cytoarchitecture in cochlear amplification

CA Shera, A Altoè - … of the National Academy of Sciences, 2023 - National Acad Sciences
The intricate, crystalline cytoarchitecture of the mammalian organ of Corti presumably plays
an important role in cochlear amplification. As currently understood, the oblique, Y-shaped …

Overturning the mechanisms of cochlear amplification via area deformations of the organ of Corti

A Altoè, JB Dewey, KK Charaziak, JS Oghalai… - The Journal of the …, 2022 - pubs.aip.org
The mammalian ear embeds a cellular amplifier that boosts sound-induced
hydromechanical waves as they propagate along the cochlea. The operation of this amplifier …

Reconstruction of transverse-longitudinal vibrations in the organ of Corti complex via optical coherence tomography

BL Frost, CE Strimbu, ES Olson - The Journal of the Acoustical Society …, 2023 - pubs.aip.org
Optical coherence tomography (OCT) is a common modality for measuring vibrations within
the organ of Corti complex (OCC) in vivo. OCT's uniaxial nature leads to limitations that …

Corti fluid is a medium for outer hair cell force transmission

M Shokrian, WC Lin, A Macić, JH Nam - Journal of Neuroscience, 2025 - jneurosci.org
The mammalian cochlea amplifies sounds selectively to improve frequency resolution.
However, vibrations around the outer hair cells (OHCs) are amplified nonselectively. The …

Compressed sensing on displacement signals measured with optical coherence tomography

BL Frost, NP Janjušević, CE Strimbu… - Biomedical Optics …, 2023 - opg.optica.org
Optical coherence tomography (OCT) is capable of angstrom-scale vibrometry of particular
interest to researchers of auditory mechanics. We develop a method for compressed …

Asymmetric vibrations in the organ of Corti by outer hair cells measured from excised gerbil cochlea

WC Lin, A Macić, J Becker, JH Nam - Communications Biology, 2024 - nature.com
Pending questions regarding cochlear amplification and tuning are hinged upon the organ
of Corti (OoC) active mechanics: how outer hair cells modulate OoC vibrations. Our …

Intracochlear overdrive: Characterizing nonlinear wave amplification in the mouse apex

A Altoè, KK Charaziak - The Journal of the Acoustical Society of …, 2023 - pubs.aip.org
In this study, we explore nonlinear cochlear amplification by analyzing basilar membrane
(BM) motion in the mouse apex. Through in vivo, postmortem, and mechanical suppression …

On the tonotopy of the low-frequency region of the cochlea

A Recio-Spinoso, W Dong, JS Oghalai - Journal of Neuroscience, 2023 - Soc Neuroscience
It is generally assumed that frequency selectivity varies along the cochlea. For example, at
the base of the cochlea, which is a region sensitive to high-frequency sounds, the best …

Narrow elliptical motion at the outer hair cell-Deiters' cell junction explains disparate features of uniaxial displacement measurements

BL Frost, CE Strimbu, ES Olson - Hearing Research, 2025 - Elsevier
Sound-evoked displacement responses at the outer hair cell-Deiters' cell junction (OHC-DC)
are of significant interest in cochlear mechanics, as OHCs are believed to be in part …