Audiology Certification

Otoacoustic Emissions (OAE’s)

Sounds measured in the external ear canal that reflect movement of the outer hair cells in the cochlea

cochlea

A spiral-shaped, fluid-filled structure in the inner ear responsible for converting sound vibrations into neural signals.

How are OAE’s produced?

from energy from outer hair cell movement , in response to sound, & is emitted back out of the auditory system to be measured and recorded into the external ear canal.

what is the tympanic membrane?

The tympanic membrane, also known as the eardrum, is a thin membrane that separates the external ear from the middle ear and vibrates in response to sound waves, playing a crucial role in the hearing process.

What is the lateral ligament of the malleus?

A ligament that connects the malleus to the surrounding structures in the middle ear, providing support and stability.

What is the umbo?

The umbo is the central, protruding part of the tympanic membrane (eardrum), where the malleus attaches, and it is the most concave part of the membrane, playing a key role in sound transmission.

What is the malleus?

The malleus, also known as the hammer, is one of the three small bones in the middle ear. It transmits sound vibrations from the tympanic membrane to the incus.

What is the epitympanic recess?

The epitympanic recess is a space in the middle ear located above the tympanic membrane, housing the head of the malleus and the body of the incus, critical for sound transmission and function.

What is the slip malleolar ligament?

The slip malleolar ligament is a ligament in the middle ear that helps to support the malleus. It plays a role in maintaining the position of the malleus and facilitating its function in sound transmission.

What is the tendon of the tensor tympani muscle?

The tendon of the tensor tympani muscle is a structure in the middle ear that attaches to the malleus. Its contraction helps dampen loud sounds and protects the inner ear by reducing sound transmission.

What is the incus?

The incus, also known as the anvil, is one of the three auditory ossicles located in the middle ear. It connects the malleus and stapes, playing a crucial role in the process of sound transmission to the inner ear.

What is the tendon of the stapedius muscle?

The tendon of the stapedius muscle is a small muscle in the middle ear that attaches to the stapes. It helps control the movement of the stapes, playing a vital role in protecting the inner ear from excessive sound levels.

What is the lateral semicircular canal?

The lateral semicircular canal is one of the three semicircular canals located in the inner ear. It plays a crucial role in maintaining balance and detecting angular head movements.

What is the posterior semicircular canal?

The posterior semicircular canal is one of the three semicircular canals in the inner ear. It is essential for balance and helps detect rotational movements of the head.

What is the footplate of stapes in the oval window?

The footplate of the stapes is a small, plate-like structure that fits into the oval window of the cochlea in the inner ear. It transmits sound vibrations from the middle ear to the inner ear, facilitating the process of hearing.

What is the superior supercircular canal?

The superior semicircular canal is one of the three semicircular canals in the inner ear. It is responsible for detecting head tilting and forward-backward movements, playing a key role in balance.

What is the utricle?

The utricle is a fluid-filled chamber in the inner ear that detects linear acceleration and head position relative to gravity, playing a crucial role in the vestibular system.

What is the Ganglia vestubular nerve?

The vestibular ganglia, also known as Scarpa's ganglion, are clusters of nerve cell bodies located in the inner ear that transmit sensory information related to balance from the vestibular system to the brain.

What is the cochlear nerve?

The cochlear nerve, also known as the auditory nerve, is responsible for transmitting sound information from the cochlea in the inner ear to the brain, playing a key role in the sense of hearing.