FIG. 9.

Schematic model representing the configuration of mechanical elements including mass (m), stiffness (k) and viscous drag/damping (C) that govern the response of the otoconial system. Components symbolize elements in the differential Eq. A-1 as follows: Stiffness is represented as a spring with stiffness k, where restoring forces develop with displacement (kx), inertial forces are associated with a lumped otoconial mass (m) and acceleration ($m\ddot{x}$) and the dashpot represents forces associated with viscous drag (C), which develop in association with kinematic velocity ($c\dot{x}$).