The regular tuning of an audiometer to set the presentation values at levels consistent with (inter)national standards.
Comprised of cartilage, a dense but flexible connective tissue.
Central Auditory Processing
The awareness of an auditory signal in the central nervous system, that occurs beyond the peripheral auditory system (outer ear, middle ear, and cochlea), and the interpretation / processing of that signal.
The area where the VIII nerve enters the brainstem. At this location, the auditory pathway takes a turn (angles) upward. This occurs at the junction of the cerebellum and pons portion of the brainstem, ergo the name.
A benign expanding mass which can form in the middle ear cavity. It is made up of skin and cholesterol crystals. The mass can become infected and cause other problems in the middle ear.
Tiny hairlike projections on a cell. Ciliated cells are found in portions of the middle ear space, the Eustachian tube, and in the cochlea. Cilia are found on both outer and inner hair cells.
Extraneous sounds present in the output of a hearing aid that are related to the function of the hearing aid's mechanism, not due to external sounds.
An audiologist who specializes in the assessment, treatment, and rehabilitation of hearing and balance disorders.
The transcription of oral words and sounds, present in a TV or movie broadcast, into written words and displayed for the purpose of improving a hearing impaired individual's access to media presentations.
The snail-shaped portion of the inner ear that contains the hair cells and nerve endings that convert a sound from the mechanical/vibratory movements present in the middle ear into an electrical charge, as the sound travels to the brain for processing.
An electronic device, a portion of which is surgically implanted into the inner ear, that is designed to provide a sensation of sound to deaf individuals.
Group of nerve cells just medial to the VIII nerve. The first nucleus in the auditory pathway.
Any abnormality in speech, language, or hearing processes that results in an inefficient exchange of information.
An internal feature present in most current hearing aids that helps to control the intensity of higher volumes. There are many varieties of compression and each one has its advantages and disadvantages, but they all in someway make the hearing aid non-linear.
The bowl area of the pinna (auricle) that channels sound from the environment to the ear canal.
Also called compression. The portion of a sound wave where the air molecules are most tightly packed together.
Conditioned Play Audiometry
A method utilized in the assessment of hearing abilities of pediatric patients. The child is trained to perform a specific enjoyable task whenever a sound is presented.
Conductive Hearing Loss
A decrease in an individual's ability to hear a particular sound due to an inefficiency or disruption in the outer ear or middle ear system. A conductive hearing loss is when the sounds are somehow "blocked" as they travel from the pinna to the cochlea.
Cone Of Light
A triangular brightness visible on the lower portion of the tympanic membrane (eardrum) during otoscopy due to a reflection of the light coming out of the otoscope.
Cookie Bite Audiogram
A description of the graph of an individual's hearing thresholds in which the middle frequencies are noticeably poorer than the low and high frequencies.
Outside portion of the cerebrum, consisting of gray matter (material that is mostly cell bodies, rather than white matter, which is mostly myelinated neurons).
Singular (crura is plura), from the Latin word meaning leg, it is a side part of the stapes bone of the middle ear.
Various hand shapes utilized by someone who is speaking to a deaf individual to enhance the speech reading information available.
Custom Hearing Aid
A hearing aid fashioned in its size and amount of amplification to appropriately match a specific patient's ear.