sensorineural hearing loss
Hearing impairment caused by damage to the inner ear or auditory nerve pathways.
ABR
Auditory brainstem response test measuring neural activity from the auditory nerve to the brainstem.
Acclimatisation
The gradual perceptual adjustment a hearing aid user undergoes as their auditory system adapts to amplified sound over w...
acoustic reflex
Involuntary middle ear muscle contraction in response to loud sounds, measured during impedance testing.
aided audiogram
A graph of a patient's hearing thresholds measured while wearing hearing aids, used to assess the benefit provided by am...
Aided Speech Intelligibility Index
A calculated measure estimating the proportion of the long-term average speech spectrum that is audible and usable to a...
aided thresholds
Hearing sensitivity measurements obtained while the patient wears hearing aids or assistive devices.
air-bone gap
Difference between air conduction and bone conduction thresholds, indicating conductive hearing loss component.
ANSD
Standard abbreviation for auditory neuropathy spectrum disorder, used after the full term has been introduced.
ASSR
An objective electrophysiological test using continuous, modulated tones to estimate frequency-specific hearing threshol...
audiogram
A graph showing hearing threshold levels across different frequencies, fundamental to audiological documentation.
audiological history
The structured case-history component of an audiological evaluation capturing onset, progression, aetiology, and impact...
audiological profile
A comprehensive summary of an individual's hearing abilities derived from a battery of audiological tests, used to guide...
audiological rehabilitation
A broad programme of interventions—including hearing aid fitting, counselling, and communication strategy training—aimed...
Audiologist
A health professional trained to assess, diagnose, and manage disorders of hearing, balance, and related conditions.
Audiometric Configuration
The overall shape or pattern of hearing thresholds across frequencies as plotted on an audiogram, used to describe the t...
Audiometric Zero
The standardised reference sound pressure level representing the average threshold of hearing in a young, otologically n...
Auditory Brainstem Response
An electrophysiological test measuring the electrical activity of the auditory nerve and brainstem in response to sound...
Auditory Deprivation
The progressive deterioration in speech recognition ability in an unaided ear resulting from prolonged absence of acoust...
auditory neuropathy spectrum disorder
A hearing condition in which outer hair cell function is preserved but neural synchrony along the auditory nerve is disr...
auditory processing disorder
A condition in which the central auditory nervous system fails to process auditory information normally, despite periphe...
Auditory Steady-State Response
An electrophysiological measure of hearing sensitivity in which the auditory system's response to amplitude- and/or freq...
BAHA
Bone-anchored hearing aid that transmits sound through bone conduction via a titanium implant in the skull.
Békésy audiometry
A self-recording audiometric technique in which the patient controls the signal level by pressing and releasing a button...
BiCROS
Bilateral microphones with contralateral routing of signal; a hearing device configuration for patients with single-side...