Figure 3
From: Bone-conduction hyperacusis induced by superior canal dehiscence in human: the underlying mechanism
(A) Illustration of BC rigid-body motion of the inner-ear wall. The dashed-line boundary represents the position of the inner-ear wall at an instant away from the temporal origin. The thick line within the bony wall represents the basilar membrane. An arrow indicates the direction of acceleration. The square box represents a free-body diagram of the inner-ear fluid for use in analyzing the relation between the pressure and acceleration (Eqs. 1–3). (B) The three vertical sections designated by double-ended lines represent sound-pressure differences due to equivalent sound sources produced by the bulk motion of the fluid across the vestibule (SV), scala vestibuli (SSV), and scala tympani (SST). (C) The lumped-element circuit model for BC sound transmission driven by the fluid-inertia sound sources.
