Ears and Hearing

Audiology Evaluations & Testing

Pediatric Testing: At Sacramento ENT, our audiologists can assess the hearing of infants, toddlers and young children in a comfortable environment. Infants are tested using objective measures including Auditory Brainstem Response Audiometry, Otoacoustic Emissions, and Impedance Measures. When your child is 4-6 months of age, our Audiologists will use Visual Reinforcement to evaluate your baby’s hearing. By age 2, your child may be assessed using Play Audiometry either in soundfield or under headphones. These subjective techniques along with objective measures will provide you with the confidence you need for the assessment of your young child’s hearing.

Impedance Testing: This measures the functional integrity of the eardrum and middle ear anatomy. It includes Tympanometry which uses air pressure in the ear canal to measure ear drum movement can also provide information about middle ear integrity. Acoustic Reflex testing measures contraction of the stapedial reflex muscle in the middle ear in response to a loud sound; this reflex action is designed to dampen loud sounds before they arrive at the cochlea or inner ear.

Otoacoustic Emissions (OAEs): Otoacoustic emissions (OAEs) are low level, inaudible sounds produced by the outer hair cells of the inner ear (cochlea). OAEs can either occur spontaneously or in response to clicks or tones. When the hair cells of the inner ear are stimulated, they respond by sending information to the brain and by sending an “echo” back to the outer ear. This “echo” can be analyzed and recorded. OAEs can be used as a screening tool to test infants and children to provide objective information about the function of the outer hair cells.

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