TABLE OF CONTENTS
Abstract
Dedication
Acknowledgment
Table of content
Chapter One
Introduction
Aims and objective
Scope of study
Limitations
Chapter Two
Literature review
Chapter Three
The mechanism of sound conduction
Role of the outer ear in sound conduction
Role of the middle ear in sound conduction
The mechanism of sound transduction
Role of the inner ear in sound transduction
Structure of the inner ear
Function of the inner ear in sound transduction
Hearing mechanism
The outer and middle ears
The inner ear
Summary of the hearing mechanism
Range of hearing
Chapter Four
Introduction
Model formulation
Details of the solution of equation of motion of the fluid
Chapter Five
Analysis of the solution
Conclusion
References
ABSTRACT
In this thesis, we present a mathematical model that describes the fluid motion in the inner ear and the behaviour of the basilar membrane for such motion. The equation of the fluid motion in the inner ear was solved using the potential flow theory since the fluid is considered to be incompressible. The obtained solutions show that the velocity potentials of both chambers are the same.
CHAPTER ONE
1.1 INTRODUCTION
Hearing is the ability to perceive sound by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear. Sound may be heard through solid, liquid, or gaseous matter.
In humans and other animals, hearing is performed primarily by the auditory system. Mechanical waves in form of vibrations are detected by the ear and transduced into nerve impulses that are perceived by the brain.
The ear is one of the major senses in the body and like vision, is important for distance warning and communication. It can be used to alert, to communicate pleasure and fear. It is a conscious appreciation of vibration perceived as sound. In order to do this, the desired signal has to reach the higher parts of the brain. The function of the ear is to convert physical vibration into an encoded nervous impulse. Like a microphone the ear is stimulated by vibration. In the microphone, the vibration is transduced into an electrical signal, while in the ear into a nervous impulse which in turn is then processed by the central auditory pathways of the brain.....
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