Quantitative Reappraisal of the Helmholtz-Guyton Resonance Theory of Frequency Tuning in the Cochlea

Figure 4

Equivalent mechanical system in one dimension, consisting of lumped masses, 𝑚, springs,𝑘, viscous dampers, μ, at various axial locations, 𝑥, along the basilar membrane. Parameters 𝑘 and μ vary systematically as functions of 𝑥.