AAO-HNSF Certificate Program for Otolaryngology Personnel

Properties of Reverse Waves • Frequency is related to original sound input frequency • Small in amplitude (approximately 1-15 dB) • Recorded by a probe microphone in the ear canal • Recordings are called otoacoustic emissions (OAEs)

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

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Types of OAEs • Spontaneous otoacoustic emissions • Transient or click evoked otoacoustic emissions • Distortion product otoacoustic emissions

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

5

Spontaneous OAEs • Occur without the direct stimulation of the ear • Are found in 30-40% of the normal hearing population

• Occur twice as often in females than in males • Generally pure tone stimuli – 1000 – 2000 Hz • Vary in amplitude between patients and ears

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

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