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Re: Cochlea Amplifier models : a new list
At 2:54 PM +0200 10/10/07, Martin Braun wrote:
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.
I haven't been able to find the evidence for the assertion that
neural tuning remains unchanged in some way that differs from the
sense in which BM tuning remains unchanged; in the BM case, the
location of the maximum moves toward the base; it might be hard to
assess the location of the peak of the neural response, since the
respond rate is pretty compressed near the location of maximum, but
is there data on that? My impression was that it does not differ in
any significant way from BM tuning; assessing the tuning by phase
response is much easier (e.g., spacing of waveform peaks and PSTH
peaks in response to a click, or waveform autocorr peaks and revcor
peaks in response to a noise). These do change just a bit with
level, in close agreement with TW models that include appropriate
nonlinearities, e.g. as shown in Kiang's original click data of 1965
and everything subsequently.
Where should I look to study the data on this idea that underlies
your modeling approach?