TEOAE
Built-in flexibility for screening and diagnostics
The Integrity™ V500 System TEOAE module provides ready-to-use protocols for assessment, and the ability to create new protocols for both screening and diagnostics. The TEOAE module also provides a choice of OAE probes for general or pediatric use.
Transient Evoked Otoacoustic Emissions (TEOAE) are sounds generated by the cochlea’s outer hair cells in response to a transient click. The presence of a TEOAE response is an indication that the cochlear amplifier is functioning properly. TEOAEs are an indicator of outer hair cell function in the range of about 750 Hz to 4 kHz. Typically, TEOAEs cannot be detected in ears with sensory hearing loss greater than or equal to 30 dB HL or with signs of middle ear abnormalities.
OAEs can be used for hearing screening in newborn children. Normal hearing infants have an evoked response to DPOAE or TEOAE testing. However, when an infant’s outer ear, middle ear, or inner ear obstructs the passage of sound, an OAE response will not be evoked.
Clinical Applications
- Detects outer hair cell function
- Assists in identifying the cochlear component of a hearing disorder
- Widely used by newborn hearing screening programs to detect sensory hearing loss
How it Works
The VivoLink™ generates a wide-band transient click stimulus into the occluded ear canal.
Two important features ensure the reliability of the test results:
- Cavity Check: Checks the probe calibration before testing proceeds.
- Probe Fit Check: Checks the proper probe insertion in the ear before testing proceeds.
There are three available operating modes: automatic screening, manual screening, and assessment.
Probe Calibration
The VivoLink™ automatically retrieves the OAE Probe calibration data and performs a system self-test prior to beginning patient testing, adjusts stimulus levels according to the patient’s occluded ear canal volume, and conducts OAE measurements.