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Re: mechanical cochlear model
Richard F. Lyon wrote:
..... The cochlear traveling wave may have some open issues, but to say
that "its function in hearing is not yet universally appreciated" is
misleading, and I think a bit disingenuous.
Dear Sir, please watch out what you write. The quoted sentence is not
misleading, let alone "disingenuous". I was present at the last of the
triennial conferences on Cochlear Mechanics in summer 2008 at Keele
University/UK. You were not. You seem to have lost touch with the field.
Until you have recovered some lost ground restraint would be in order. And
stop your slander, please.
David Mountain wrote:
The cochlear traveling wave is still alive and well.
Yes, it is. What is not "well", and in fact fatally ill, is Georg von
Bekesy's view that this traveling wave allocates frequency to place along
the cochlear duct. The evidence against this view would now fill books.
Already in 1961, when Bekesy was awarded the Nobel prize, the literature was
already full of evidence against his view. However, Bekesy and his followers
succeeded in neglecting all unwelcome evidence. Later researcher, then, who
started their careers in the 1970s silenced the unwelcome counterevidence by
simply not referencing it any more.
Just one example. In the 1950s it was well established and widely discussed
that temporary threshold shift (TTS) due to high-level sound exposure does
not occur at the place of the characteristic frequency (CF) of the stimulus
(say, 2 kHz) but about half an octave towards the base of the cochlea (i.e.,
at the CF place of 3 kHz). These often repeated observations were, and still
are, evidence for the view that the basilar membrane traveling wave peaks
about half an octave basalwards of the neural CF. Yet, Bekesy and his
followers succeeded in treating this evidence as if it did not exist.
Again, this is only one of the many failures of the field during the 1950s
and 1960s. Anybody is invited to find some of the others.
Neuroscience of Music
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web site: http://www.neuroscience-of-music.se/index.htm