Mean Bode plots for three unit samples are compared with three theoretical transfer functions. Unit samples: all PC bouton units (n = 30), the PC bouton units with the largest phase leads at 0.3 Hz (n = 7), and PN units (n = 18). Theoretical transfer functions:TP (torsion-pendulum model), Expected endolymph displacement for semicircular canals re: angular head velocity (see Equation 1b in Results for parameters). VN, expected PN cupular displacement re: endolymph displacement, was calculated from Equation 15 (van Netten, 1991) with viscosity, μ = 1.0 × 10−2 gm/cm · sec, density, ρ = 1.0 gm/cm3; PN cupular radius, a = 6 × 10−3 cm; and PN cupular elasticity,S = 26 dynes/cm. PM, Expected displacement of PN cupula re: angular head velocity was obtained from PM = TP * VN.