In addition to converting sound waves into nerve action potentials, the inner ear is also responsible for the sense of equilibrium, which relates to our general abilities for balance and coordination. They also help compensate for the loss in sound energy that naturally occurs when the sound waves pass from air into water by amplifying the sound energy during the process of sound transmission. The role of the outer and middle ear is to transmit sound to the inner ear. The airborne sound waves must therefore be channelled toward and transferred into the inner ear for hearing to occur. The inner ear also contains the receptors for sound which convert fluid motion into electrical signals known as action potentials that are sent to the brain to enable sound perception. The ear is divided into three main parts – the outer ear, the middle ear, and the inner ear. Hearing consists of two components: identification of sounds (what the sound is) and localisation of those sounds (where the sounds are coming from). Hearing can be defined as the perception of sound energy via the brain and central nervous system.
The ear is the sense organ that enables us to hear.
The semicircular canals: Detecting rotational acceleration.
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