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PTA
It is a hearing test used for both screening and diagnosis purposes. This test determines not only presence or absence of hearing loss but also type, degree and configuration of hearing loss. Each ear will be tested individually. This information is critical to determine if medical or surgical intervention is possible or if hearing aids may help. This test provides information about which part of the ear problem occurs like the outer ear, middle ear or inner ear and what are possible treatment.
IA Test
Impedance audiometry (IA) test includes tympanometry and acoustic reflex measurements. Impedance audiometry provides information about eardrum or middle ear disorders such as chronic otitis media with effusion (COME), tympanic membrane perforation, otosclerosis, and others. This information is crucial for the treatment of middle ear disorders.
The Eustachian Tube Function (ETF) test, also performed with the same instrument, provides important information about middle ear problems and Eustachian tube functioning.
OTO-ACOUSTIC EMISSIONS (OAEs)
OAEs were mostly used as screening test to new born child which assess the functioning of the outer hair cells within the cochlea of the inner ear. This test provides results as Pass or Refer. Pass result indicative of at that time hearing is normal and Refer indicates that child needed further detailed investigation for hearing which is generally done with BERA test. In conjunction with BERA, OAEs are often used to differentially diagnose auditory neuropathy – a disorder of the auditory nerve
BERA and ABR Tests
It is a neurophysiological method used to assess the auditory pathway up to the brainstem. It evaluates the function of the auditory nerve and brainstem in response to sound stimuli. This test is used to diagnose hearing loss, especially in infants and young children who cannot participate in conventional hearing tests as this test do not require the child to respond to the sounds. It also helps to identify the site of lesion in patients with suspected retro-cochlear pathology, such as acoustic neuromas or auditory neuropathy.
Auditory steady state Response (ASSR)
This test is an advanced auditory evoked potential test used to objectively assess hearing thresholds. Unlike traditional auditory tests, ASSR can estimate hearing sensitivity across different frequencies simultaneously and is particularly useful for diagnosing various degrees of hearing loss, including profound hearing loss.
It is used to evaluate hearing thresholds across a wide range of frequencies in individuals who cannot provide reliable behavioral responses, such as infants and those with developmental disabilities.
NRT and Mapping
Cochlear implants rely on advanced procedures like Neural Response Telemetry (NRT) and mapping to ensure that each user receives the best possible hearing performance tailored to their individual needs.
Neural Response Telemetry (NRT): – Neural Response Telemetry is a technique used to measure the electrical responses of the auditory nerve to stimulation from the cochlear implant. It helps audiologists and surgeons ensure that the implant’s electrodes are correctly positioned and functioning as intended.
Mapping: – Mapping is the process of programming the cochlear implant to suit the specific hearing needs of the user. This involves setting the electrical stimulation levels for each electrode on the implant to ensure optimal hearing performance
By combining NRT and detailed mapping procedures, audiologists can maximize the benefits of cochlear implants, leading to significant improvements in hearing and quality of life for recipients.
Screening
Newborn hearing screening is a crucial process to detect hearing loss at the earliest stage. Early diagnosis enables timely intervention, greatly supporting a child’s language, social, and cognitive development.
This screening typically involves two primary tests: Otoacoustic Emissions (OAE): and Auditory Brainstem Response (AABR).
Industrial hearing screening is carried out to monitor the hearing of workers in noisy environments. Routine tests help detect noise‑induced hearing loss early, ensuring protective action can be taken.
Both newborn and industrial screening play vital roles in preventing and managing hearing loss within their specific populations.
Tinnitus — Audiologist Evaluation & Management
A concise guide describing common tinnitus sounds, the audiologist’s evaluation process, and evidence-based management strategies aimed at improving quality of life.
What is tinnitus?
Tinnitus is the perception of sound in the ears or head when no external source is present. It commonly presents as ringing, buzzing, hissing, pulsatile noises, or whistling. For many people it is intermittent, but it can also be persistent and bothersome.
Audiologist evaluation
An audiologist evaluates tinnitus by taking a detailed history and performing tests to characterize the symptom. Typical items collected include:
- Onset and duration (when it started and how long it lasts)
- Pitch and loudness (high/low, soft/loud)
- What worsens or relieves it (e.g. noise exposure, stress, silence)
- Associated symptoms (hearing loss, dizziness, ear pain)
Tinnitus Matching
Tinnitus Matching measures the perceived pitch and loudness by comparing external tones to the patient’s tinnitus. This helps the clinician understand the tinnitus characteristics and tailor management.
Other tests
Pure-tone audiometry, speech testing, and sometimes imaging or referral to ENT if pulsatile tinnitus or other red flags are present.
Management strategies
Based on the evaluation, audiologists may offer one or more of the following approaches:
- Sound therapy: Background sounds (environmental sounds, nature, or specialized sound generators) to make tinnitus less noticeable.
- Hearing aids: Amplifying external sounds for patients with hearing loss can reduce the relative prominence of tinnitus.
- Masking devices: Portable devices that produce white noise or soothing sounds to partially cover tinnitus.
- Tinnitus Retraining Therapy (TRT): A structured program combining sound therapy and counseling to promote habituation to tinnitus.
Audiologists aim to improve functional ability and quality of life. Management is individualized — what works for one person may not work for another.
Key takeaway
If you or someone you know experiences persistent or bothersome tinnitus, a clinical audiology assessment is a practical first step. Early evaluation helps identify treatable causes and provides access to management options that can reduce the impact on daily life.
Vertigo Assessment and Rehabilitation: Key Instruments
Assessment and rehabilitation of vertigo rely on specialized tools used to identify vestibular dysfunction, evaluate balance, and guide treatment planning. Below are the most commonly used instruments:
1. Videonystagmography (VNG)
- Records eye movements using infrared video goggles.
- Assesses vestibular function via nystagmus, pursuit, saccades & caloric tests.
- Helps differentiate peripheral vs. central vertigo.
2. Computerized Dynamic Posturography / COG
- Evaluates visual, somatosensory & vestibular contributions to balance.
- Includes dual-task tests to analyze cognition–gait interaction.
- Useful for fall-risk assessment & rehabilitation planning.
3. Video Head Impulse Test (vHIT)
- Measures VOR during rapid passive head movements.
- Assesses all six semicircular canals.
- Helps diagnose unilateral/bilateral vestibular hypofunction.
4. Stabilometry / Static Posturography
- Analyzes center of pressure (COP) sway while standing.
- Identifies balance deficits & tracks rehab progress.
- Performed using a force platform.
5. Craniocorpography (CCG)
- Measures head & body movements during balance tasks.
- Used in Fukuda/Unterberger stepping tests.
- Detects rotational deviations linked to vestibular disorders.
6. Electrocochleography (ECoG / ECochG)
- Measures inner ear & auditory nerve electrical potentials.
- Used to detect endolymphatic hydrops (e.g., Ménière’s disease).
- Provides cochlear & vestibular electrophysiology insights.
7. Vestibular Evoked Myogenic Potentials (VEMP)
- Assesses otolith organs (saccule & utricle) and vestibular nerves.
- cVEMP evaluates saccule & inferior nerve; oVEMP evaluates utricle & superior nerve.
- Used for superior canal dehiscence & otolith dysfunction diagnosis.