Resonance of the tympanoperiotic complex of fin whales with implications for their low frequency hearing.

ABSTRACT: The tympanoperiotic complex (TPC) bones of the fin whale skull were studied using experimental measurements and simulation modeling to provide insight into the low frequency hearing of these animals. The study focused on measuring the sounds emitted by the left and right TPC bones when the bones were tapped at designated locations. Radiated sound was recorded by eight microphones arranged around the tympanic bulla. A finite element model was also created to simulate the natural mode vibrations of the TPC and ossicular chain, using a 3D mesh generated from a CT scan. The simulations produced mode shapes and frequencies for various Young's modulus and density values. The recorded sound amplitudes were compared with the normal component of the simulated displacement and it was found that the

SUBMITTER: Morris M 

PROVIDER: S-EPMC10566675 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature