Publications by authors named "Asheesh S Momi"
Sound produces surface waves along the cochlea's basilar membrane. To achieve the ear's astonishing frequency resolution and sensitivity to faint sounds, dissipation in the cochlea must be canceled via active processes in hair cells, effectively bringing the cochlea to the edge of instability. But how can the cochlea be globally tuned to the edge of instability with only local feedback? To address this question, we use a discretized version of a standard model of basilar membrane dynamics, but with an explicit contribution from active processes in hair cells.
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- Sound waves create surface waves on the cochlea's basilar membrane, and to maximize hearing sensitivity and frequency resolution, active processes in hair cells help maintain stability.
- The study uses a model of the basilar membrane that includes these active processes, revealing two types of modes: localized modes that can be amplified independently, and collective extended modes that are sensitive to destabilization.
- The research highlights how individual hair cells work together to maintain a delicate balance, or 'critical cochlea,' which is essential for optimal hearing performance.