Subject: Re: Delay of the active cochlea From: Matt Flax <flatmax@xxxxxxxx> Date: Wed, 26 Sep 2007 23:04:00 +1000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Hi Tamás, You have two approaches with respect to active delay : 1] Travelling wave delay ... I am not sure where to find accurate delay measurements for the travelling wave point of view ... a good theoretical treatment follows from Shera's work [1] for example. I am sure in that paper you will find references to measurements... 2] Electrical delay measurements ... Wilson gives some detail about this issue [2]. The travelling wave active models assume as much as 12 cycles of delay - perhaps more ? I am going to submit my PhD thesis in the next few months ... it will delve more into the physiological mechanisms of activity.... stay tuned! Matt [1] @xxxxxxxx{shera:2005, author = {Shera, C.A. and Tubis, A. and Talmadge, C.L.}, title = {{Coherent reflection in a two-dimensional cochlea: Short-wave versus long-wave scattering in the generation of reflection-source otoacoustic emissions}}, journal = {The Journal of the Acoustical Society of America}, year = {2005}, volume = {118}, pages = {287}, publisher = {ASA} } [2] @xxxxxxxx{wilson:1980, author = {Wilson, JP}, title = {{Model for cochlear echoes and tinnitus based on an observed electrical correlate.}}, journal = {Hearing Research}, year = {1980}, volume = {2}, pages = {527--32}, number = {3-4} } On Wed, Sep 26, 2007 at 10:55:28AM +0200, Harczos Tamás wrote: > Dear List, > > regarding to Greenberg et al. (1997) the amount of cochlear delay along the > basilar membrane has 1/x manner, and ranges from ~3ms to ~12ms. For an > experiment I would need very precise delay values for human cochlea and I > wonder if someone could point me to references from the last 10 years > concerning measurement results of active cochlear delay in humans. > > Thanks in advance! > Tamás -- http://www.flatmaxstudios.com/ http://www.flatmax.org Public Projects : http://sourceforge.net/search/?type_of_search=soft&words=mffm http://www.psysound.org