Conditions Underlying the Appearance of Spontaneous Otoacoustic Emissions in Mammals.
Level 5 - mechanism / opinion, no new human data
Narrative review proposing a mechanistic hypothesis without systematic review or primary data
PubMed 38760548 · doi:10.1007/s10162-024-00950-5
What was done
A narrative review examining the physiological factors that determine whether spontaneous otoacoustic emissions (SOAE) are present or absent across mammalian species.
What was found
The abstract reports no numerical or quantitative findings. It presents a theoretical hypothesis that when the space constant of frequency distribution becomes larger, coupling between adjacent hair-cell regions decreases, increasing the likelihood of spontaneous otoacoustic emission generation.
Why it matters
This paper proposes a biophysical framework to explain the interspecies variability in spontaneous otoacoustic emissions observed across mammals.
Limits
The abstract describes a narrative review without systematic search methods, empirical data, or sample size metrics. The proposed mechanism is theoretical and lacks reported experimental validation within the abstract.