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Re: Cochlea Amplifier models : a new list
What would be the point of protecting the region tuned to the frequency
at which high levels of energy are present, at the expense of the region
tuned to half an octave higher? As I'm sure you know there is a long
list of publications showing this pattern of acoustic injury.
Perhaps the shift in best frequency is an epiphenomenon?
2) At high sound levels:
Here BM tuning is shifted by about half an octave towards the base of
the cochlea, whereas neural tuning remains unchanged. The effect of
this shift is that BM vibrations absorb acoustical energy, before it
reaches the OHCs that are tuned to the same sound frequencies. Thus it
is evident that this mechanisms must contribute to the protection of
OHCs from overstimulation.
In summary, at low sound levels BM vibrations are an epiphenomenon of
OHC motility, and at high sound levels they are specifically tuned to
absorb energy for overload protection.
PhD candidate Speech and Hearing Bioscience and Technology
You will stop at nothing to reach your objective, but only because your
brakes are defective.