Understanding the Main Types of Hearing Tests

Which Hearing Test Do You Need?

Hearing tests check different parts of the auditory system. Pure Tone Audiometry measures hearing levels through responses to sounds. BERA checks auditory nerve and brainstem activity. OAE checks cochlear activity, and tympanometry checks middle-ear function. ASSR estimates hearing levels when responses are not reliable.

A hearing assessment usually starts with an ear examination and case history. An Audiologist may then use headphones or inserts for air conduction testing. This checks the full hearing pathway. Bone conduction testing sends vibrations through the skull. It helps show whether the problem affects the outer ear, middle ear or deeper hearing system.

Speech audiometry adds useful information about speech hearing and word understanding. PTA is often central for adults who can follow instructions. Babies, children with delayed speech and adults with unreliable responses may need objective tests instead.

Hearing Tests in Bhubaneswar, or elsewhere, may need more than one appointment. We match the test battery to each person. One result does not always provide a complete diagnosis.

Pure Tone Audiometry: The Standard Hearing Threshold Test

Pure Tone Audiometry is the main behavioural hearing test. It finds the softest tones a person can hear at selected frequencies. The results appear on an audiogram.

During air conduction testing, tones play through headphones or insert earphones. The person presses a button, raises a hand or gives another agreed response. Bone conduction uses a small vibrator behind the ear. It bypasses the outer and middle ear. Comparing both pathways helps the Audiologist identify conductive, sensorineural or mixed hearing loss.

Speech audiometry may also check speech detection and word understanding. PTA works well for people who understand the instructions. Still, it depends on attention, co-operation and honest responses. Ear blockage, poor concentration, tinnitus or confusion can affect the result. A repeat or additional test may be needed before hearing aid fitting.

BERA Testing: Measuring Auditory Nerve and Brainstem Responses

BERA Testing, also called an auditory brainstem response assessment, measures electrical activity along the auditory nerve and brainstem.

Small electrodes are placed on the forehead and around the ears or scalp. Earphones deliver soft sounds, and the equipment records the nerve waves. The patient does not need to press a button or raise a hand. This makes BERA useful for babies, young children and people with unreliable responses.

BERA can estimate hearing sensitivity and check the timing of nerve responses. It may help when an auditory nerve disorder is suspected. It is also useful when standard testing is not possible. Movement, muscle activity and electrical interference can affect the recording. Babies often need natural sleep. Some children may need specialist sedation under medical supervision. BERA results are read with other test findings.

OAE Testing: Checking Cochlear Function

Otoacoustic Emissions Testing checks whether the cochlea produces faint sounds after stimulation. These sounds mainly reflect the outer hair cells in the inner ear.

A soft probe sits in the ear canal and plays clicks or tones. A healthy cochlea sends a measurable echo back to the probe. The test is quick and painless. It also needs no active response, so it is widely used for newborn screening.

OAE results can show that cochlear activity is present. They do not give a complete hearing level at every frequency. Earwax, fluid, noise, movement or a poor probe seal can affect the result. An absent response does not prove permanent hearing loss. The ear may need checking before the test is repeated. BERA or ASSR may follow when needed. OAE can also monitor cochlear function with other hearing tests.

Tympanometry: Assessing the Middle Ear

Tympanometry checks how the eardrum and middle ear respond to air pressure changes. It produces a graph called a tympanogram.

A probe gently seals the ear canal and changes the pressure. It also plays a tone. The equipment records eardrum movement and estimates middle-ear pressure. These findings can help detect fluid, a perforation, stiff movement or Eustachian tube problems.

Tympanometry does not measure hearing sensitivity by itself. Earwax, a loose probe seal or an ear infection can affect the tracing. It is often combined with PTA, OAE or speech testing. Medical review or another assessment may be advised when results do not match symptoms.

ASSR Test: Estimating Hearing Levels Without Reliable Responses

ASSR Test uses an auditory steady-state response to estimate hearing levels at different frequencies. It is helpful when a person cannot respond reliably to tones.

Earphones play changing sounds while electrodes measure the brain’s electrical response. The system checks activity at several frequencies. It can support hearing-aid selection.hearing rehabilitation. ASSR may suit infants, children with limited attention and people with severe-to-profound hearing loss.

ASSR findings are estimates, not a direct behavioural audiogram. Movement, noise, sleep quality and equipment settings can affect accuracy. Results should be compared with OAE, BERA, tympanometry and clinical observations. Natural sleep may be enough for some children. Others may need a medically supervised plan to limit movement.

What to Expect Before, During and After Testing?

Hearing test preparation depends on the test method. PTA may need a quiet room, clean ears and careful attention. Young children may need natural sleep for OAE, BERA or ASSR. The Audiologist reads results alongside symptoms and examination findings.

Most simple appointments take about 30 to 90 minutes. Newborn and paediatric assessments may take longer. Bring previous reports and hearing devices when requested. They can help the team track changes over time.

Discuss the results with an Audiologist before choosing monitoring, medical care or hearing aid fitting. A tailored assessment can show which part of the auditory system needs attention.