Re: pitch neurons (Matt Flax )

Subject: Re: pitch neurons
From:    Matt Flax  <flatmax(at)IEEE.ORG>
Date:    Tue, 8 Oct 2002 02:38:21 +1000

I believe that pitch perception is NOT localised to temporal (time = neural spike train) OR place (power spectrum = laterally selected neural signal) models. I believe it is a dual perception of both time and frequency = temporal and lateral selectivity. For low frequencies it is mostly temporal (hence phase locking) For high frequencies, the afferent signal is phased out by an efferent return signal. Matt On Thu, Oct 03, 2002 at 12:30:37AM +1000, Harvey Holmes wrote: > Matt, > > These references look highly relevant to your work. > > Regarding your earlier email, yes, I agree you should do a dry run of the > SST paper here first. We still have a few weeks. I suggest that you first > do a powerpoint* presentation and send me the draft for comment/editing. > > Harvey > > *At ICSLP a couple of weeks ago I noted that ALL presentations were in > powerpoint. This is the first time ever (in last 20 years) that I haven't > seen anyone at all use overheads. > ______________________________ > Israel Nelken wrote: > > > All in all, I think that the cautious position at the moment is still > > that there is no unequivocal evidence for pitch sensitivity up to and > > including the level of primary auditory cortex in animals, independent > > of the spectral content of the sounds. ==== Martin wrote > > Dear Eli and List, > > There is no reason to assume that other mammals have different pitch > mechanisms than humans. For humans we have now compelling data that exclude > the view that pitch is first extracted in the auditory cortex: > Fishman YI, Volkov IO, Noh MD, Garell PC, Bakken H, Arezzo JC, Howard MA, > Steinschneider M (2001) Consonance and dissonance of musical chords: neural > correlates in auditory cortex of monkeys and humans. J Neurophysiol > 86:2761-88. > > The authors did not discuss the location of pitch extraction in this paper. > They focused on the consonance issue. But in seven of their figures the > data show that pitch of harmonic complex tones must be extracted below the > primary auditory cortex. I pointed this out in a comment about the paper on > my website, for which Yon Fishman was very grateful: > > > > Martin > > ------------------------------------------- > Martin Braun > Neuroscience of Music > S-671 95 Kl?ssbol > Sweden > e-mail: nombraun(at) > web site: > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system ( > Version: 6.0.391 / Virus Database: 222 - Release Date: 19/09/2002 -- WSOLA TimeScale Audio Mod : FFTw C++ : Vector Bass : Multimedia Time Code :

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