Diagnostics OAEs Exam Questions and Answers with Verified Solutions | Latest Updated 2026

Diagnostics OAEs Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026



travelling wave basal end of the cochlea/basilar
membrane moves
first and gradually starts to move posterior
sections


Active process of the cochlea Cellular level: OHC motility (active shape
changes)
- prestin (motor protein in the OHCs)
Tissue level:
- nonlinearity of the basilar membrane
movement
Functional evidence:
- OAEs
- dependence of OAEs on sufficient
oxygen supply


Otoacoustic Emissions (OAEs) low intensity sounds generated within the
cochlea
that can be detected in the external ear
canal
using a microphone
- discovered by david kemp


source of OAEs electromotility of the OHCs

, 40-50 dB Prestin knockout leads to ___________
hearing loss


OAE transmission reverse sound transmission
- the basilar membrane (hydromechanical
radiation) - the ossicles -tympanic
membrane-ear
canal


Types of OAE response Spontaneous OAEs
Evoked OAEs: Transient Evoked OAEs,
Distortion
Product OAEs
Stimulus Frequency OAEs


1-2kHz (frequency band is 1kHz) Frequency profile of the spontaneous
OAEs


Spontaneous OAE (SOAEs) OAEs presented in the absence of external
stimulation
- low level, tonal signals (narrowband
response - 1
Hz)


1-2 kHz SOAEs for adults are often present at
___________
frequency range, and 2.6 dB SPL


2-5 kHz SOAEs for infants are often present at
___________
frequency range, and 2.6 dB SPL