Otoacoustic Emissions
A self-contained, interactive guide to the cochlea's own faint echo — what it is, how we record it, how to read it, and what it tells us across the diseases of hearing. Built for students, trainees and clinicians.
Explore the atlas
Anatomy & Physiology
From the ear canal to the organ of Corti — outer hair cells, the cochlear amplifier and the medial olivocochlear efferent system.
The AtlasOAE Types & Mechanisms
Spontaneous and evoked emissions, the transient and distortion-product families, and the two source mechanisms behind them.
The AtlasInstrumentation & Technique
Probe fit, stimulus choice, the recording chain, artefact rejection and the SNR criterion behind a clean response.
The AtlasNormal Responses
What a healthy TEOAE and DP-gram look like — amplitude, latency, noise floor and the normal-ear reference picture.
The AtlasInterpretation & Pitfalls
What a present, reduced or absent emission means, the cross-check with ABR, and the traps that produce false refers and false passes.
The AtlasNewborn Screening
OAEs in early hearing detection — the screening timeline, pass/refer logic and the place of OAEs in the EHDI pathway.
InteractiveTEOAE Simulator
Drive a TEOAE trace and its signal-to-noise verdict by adjusting each ear's parameters.
InteractiveCompare Signatures
Place any two OAE signatures side by side, or overlaid against a normal reference.
InteractiveClinical Cases
Eight worked cases — read the vignette and findings, commit to an answer, then check your reasoning.
InteractivePattern Trainer
An endless stream of generated TEOAE traces to read and grade against the archetype.
InteractiveSelf-Assessment
Single-best-answer question bank with browse, spaced-repetition and timed modes.
ReferenceGlossary
Concise definitions of the key terms in otoacoustic emissions, with aliases and cross-links.
ReferenceReferences
The peer-reviewed and authoritative sources behind every claim in the atlas.
The conditions
Each condition page pairs the characteristic OAE signature with its audiogram companion, the mechanism behind the emission, and the single teaching point to carry away.