Glossary Home

ABR (Auditory Brainstem Response) - A test that can be administered by hospital staff where the functioning of the inner ears can be measured. A child is sedated, and sounds are transmitted to the inner ears via an oscillator (similar to the one on a bone conduction aid). The brains response to the sounds is recorded.

Air Conduction Hearing Aid -

Anotia complete absence of the pinna, or outer ear

Aural Atresia - the closing of the ear canal (Stenosis is the narrowing of the ear canal)

BAHA� - Bone Anchored Hearing Aid

Bone Conduction Hearing Aid -

Cholesteatoma � (1) A pseudotumor, usually occurring in the middle ear and mastoid. Can be dangerous; highly erosive, and may cause destruction of bone and other tissue.

(2) cystic tumor containing epidermal or similar tissues, that
is growing in a confined area (such as the middle ear) & frequently
constitutes a sequel to chronic otitis media. It may appear as a compact
shiny mass.

Conductive Hearing Loss -

dB (decibels) - a measurement of sound, used during hearing tests to compare someone's hearing level to the typical range. Typical hearing is 0 to 10dB. A 60dB hearing loss is classified as "moderately severe". A 90dB loss is classified as "profoundly deaf"

Microtia - a congenitally, abnormally small external ear. Graded I, II or III depending on the extent of the malformation. Grade I -

Sensory neural Hearing Loss

Stenosis - the narrowing of the ear canal - Another Glossary relating to Atresia/Microtia