Advective mixing due to physiological traveling waves. (A) Physiological vibration pattern25,26. For such a pattern with 9 kHz at 70 dB pressure, peak vibration amplitude was 60 nm. (B) Wave speed (phase velocity) along the length. (C) Simulated advection of Corti fluid, represented as in Fig. 3. (D) Mixing of Corti fluid over time. Local mixing parameters of 1-mm span centered at 1, 2.5 and 3.5 mm were computed to represent mixing in the tail, peak and head region of cochlear traveling waves.