Related Experiment Video
Updated: Jul 19, 2026

Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
Distortion product otoacoustic emissions: a time domain analysis.
1Department of Biomedical Engineering, Faculty of Mathematics and Natural Sciences, and Neuroimaging Center School of Behavioral and Cognitive Neurosciences, University of Groningen, Groningen, The Netherlands. H.Duifhuis@rug.nl
Distortion product otoacoustic emissions (DPOAEs) offer insights into inner ear function. Time domain analysis of DPOAEs reveals crucial details about cochlear mechanics, enhancing our understanding of auditory system performance.
Area of Science:
- Auditory Neuroscience
- Otoacoustic Emissions Research
- Biophysics of Hearing
Background:
- Distortion product otoacoustic emissions (DPOAEs) are non-invasive measures reflecting cochlear function.
- Normal DPOAE detection indicates healthy cochlear mechanics.
- Amplitude, phase, and temporal dynamics (DPOAE delay) of DPOAEs require further elucidation.
Purpose of the Study:
- To highlight the utility of time domain experiments and model analysis for understanding DPOAEs.
- To investigate the detailed behavior of DPOAEs over time.
- To analyze the contribution of precise temporal measurements to inner ear diagnostics.
Main Methods:
- Utilized precise time domain experiments.
- Employed time domain model analysis.
- Applied the primary-tone phase variation technique (Whitehead et al.).
Main Results:
- Demonstrated the successful application of time domain analysis to DPOAEs.
- Provided insights into the amplitude and phase behavior of DPOAEs.
- Showcased the effectiveness of the primary-tone phase variation technique in model analysis.
Conclusions:
- Time domain analysis is a powerful, often underestimated, tool for studying DPOAEs.
- Precise temporal measurements offer significant advantages in understanding cochlear mechanics.
- Further research using time domain methods can refine our understanding of inner ear function.
Related Concept Videos
Aliasing
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
Echo
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...
Discrete Fourier Transform
