Subject: Re: limits of phase locking From: Jont Allen <jba(at)RESEARCH.ATT.COM> Date: Thu, 29 Oct 1998 20:42:02 +0000I was in the lab at columbia when they did this work, and in my opinion they had a cochlear microphone component in the electrode signal. It was this CM component that they were measuring. Of course they will not agree I would suspect. However I am not alone is being suspect of this report of Teich et al. In the cat the maximum frequency for phase locking is 4 kHz. I tried to get locking at 5 kHz, and the SNR is so bad, that averaging for an hour would not recover any component at that frequency. Please look at author = {Allen, J. B.}, title = {Magnitude and phase-frequency response to single tones in the auditory nerve}, journal = {JASA}, volume = {73}, number = 6, pages = {2071-2092}, year = {1983} Jont Alain de Cheveigne' wrote: > > A while back there was a discussion on the limits of phase locking in the > auditory nerve. A limit of 4-6 kHz was quoted for the cat, and 9 kHz for > the barn owl. > > I just came across a paper by Teich, Khanna and Guiney that puts the limit > at at least 18 kHz in the cat. They used a special timing circuit that > triggered on spike peaks rather than shoulders. > > Alain > > --- > Teich, M. C., Khanna, S. M., and Guiney, P. C. (1993). "Spectral > characteristics and synchrony in primary auditory-nerve fibers in response > to pure-tone stimuli," J. Statistical Physics 70, 257-279. > --- > > ------------------------------------------------------------------ > Alain de Cheveigne' > Laboratoire de Linguistique Formelle, CNRS / Universite' Paris 7, > case 7003, 2 place Jussieu, 75251 Paris CEDEX 05, FRANCE. > phone: +33 1 44273633, fax: +33 1 44277919 > e-mail: alain(at)linguist.jussieu.fr > http://www.linguist.jussieu.fr/~alain/ > ------------------------------------------------------------------ > > McGill is running a new version of LISTSERV (1.8d on Windows NT). > Information is available on the WEB at http://www.mcgill.ca/cc/listserv -- Jont B. Allen, Room E161 AT&T Labs-Research, Shannon Laboratory 180 Park Ave. Florham Park NJ 07932-0971 973/360-8545voice, x7111fax, http://www.research.att.com/info/jba To send a fax that I get by email: 973/360-8545 (Experimental) McGill is running a new version of LISTSERV (1.8d on Windows NT). Information is available on the WEB at http://www.mcgill.ca/cc/listserv