Related Experiment Video
Updated: Apr 27, 2026
Performing Intracochlear Electrocochleography During Cochlear Implantation
Published on: March 8, 2022
[Cochlear microphonic latency]
Julio Sanjuán Juaristi1, Mar Sanjuán Martínez-Conde1
1Unidad de Neurofisiología Experimental, Hospital Ramón y Cajal, Madrid, España.
Introduction And Objective:
By using appropriate instrumentation, we have found that cochlear microphonics (CM) advance or delay their appearance, depending on the sound pressure that generates them. This time variation is on the order of microseconds. We have not found any reference to this behaviour, which is why we make the finding known.
Material And Method:
We used the standard instrumentation specified for the study of CM. The method was based on the phase shift function of the CM according to the intensity of the stimulus.
Results:
Latency was observed in CM, and we determined that latency time diminishes as the intensity of the stimulus increases.
Conclusions:
From the sound stimulus to the bioelectric potential transduction, there is a time period of microseconds, the shorter the more powerful the stimulus. This suggests that electromechanical transduction is not a simple mechanical process.
Related Concept Videos
01:13The Cochlea
01:22Hair Cells
01:15Auditory Pathway
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
01:06Echo
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,...