Related Experiment Video
Updated: Jul 10, 2026
05:44
Research Application of Laser-Induced Shock Wave for Studying Blast-Induced Cochlear Injury
Published on: March 1, 2024
3D Computational Modeling of Blast Wave Transmission from External Ear to Cochlear Hair Cells
1Biomedical Engineering Laboratory, School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK, USA. Yijie.Jiang@ou.edu.
Advances in Experimental Medicine and Biology
|July 8, 2026
Summary
Finite element (FE) modeling advances our understanding of human ear mechanics for better hearing protection and prostheses. This review covers macroscale and microscale FE models, crucial for analyzing sound transmission and predicting cochlear damage.
Area of Science:
- Biomechanics
- Auditory Science
- Computational Modeling
Background:
- The human ear's complex biomechanical system converts sound waves into neural signals.
- Understanding mechanical energy transmission is vital for hearing health and assistive devices.
Purpose of the Study:
- To review advancements in 3D finite element (FE) models of human ear mechanics.
- To explore macroscale and microscale modeling for auditory research and clinical applications.
Main Methods:
- Review of macroscale FE models simulating sound and blast wave propagation using fluid-structure interaction (FSI).
- Description of multiscale FE models integrating cochlear partition and organ of Corti (OC) mechanics.
- Integration of macroscale and microscale models for trauma and fatigue analysis.
Main Results:
- Finite element (FE) modeling provides crucial insights into ear mechanics, complementing experimental studies.
- Developed models range from macroscale sound propagation to microscale cochlear responses.
- Integrated models can simulate blast-induced cochlear trauma and acoustic fatigue.
Conclusions:
- 3D FE models offer a comprehensive framework for understanding auditory biomechanics across length scales.
- These models are essential for improving surgical treatments, hearing protection, and auditory prostheses.
- FE modeling facilitates prediction of cochlear damage from acoustic and blast exposures.
Related Concept Videos
01:13The Cochlea
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
01:16Anatomy of the Ear
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
01:15Auditory Pathway
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
01:22Hair Cells
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.