Re: BM motion

["Richard F. Lyon" <DickLyon@xxxxxxx>]

At 4:08 PM +1100 11/14/07, Matt Flax wrote:
> Travelling waves have no mechanism for high side suppression...
> it is simply not possible.

That assertion continues to puzzle me, though I agree that the full 
account of suppression needs more than just the local nonlinearities 
of the travelling wave interacting with OHCs.  There will be some 
high-side suppression with that alone, but you'll get more if you 
model the control of OHCs by efferent feedback, a necessary part of a 
"complete" cochlear model.

> Clearly in the literature [1] last paragraph for example ... here
> is an excerpt :
> ... neither models nor experiments have yet answered what
> is perhaps the central question of mammalian cochlear
> physiology, namely, the origin of the CF specificity of
> two-tone suppression and other mechanical nonlinearities.

I agree with Mario that the "origin" remains insufficiently 
explained, but that doesn't make the "effect" hard to model.  Some 
insight into such models might be gained from some of my old papers:
http://dicklyon.com/tech/Hearing/AGC_MOH1990-Lyon.pdf
http://dicklyon.com/tech/Hearing/Cochlea_Demyst-Lyon.pdf

Dick