User talk:Lvarnet

Welcome!

Welcome to Wikipedia, Lvarnet! Thank you for your contributions. I have been editing Wikipedia for some time, so if you have any questions, feel free to leave me a message on my talk page. You can also check out Wikipedia:Questions or type {{help me}} at the bottom of this page. Here are some pages that you might find helpful:

Also, when you post on talk pages you should sign your name using four tildes (~~~~); that will automatically produce your username and the date. I hope you enjoy editing here and being a Wikipedian! Nihlus 23:14, 4 February 2018 (UTC)[reply]

@Nihlus: Hi Nihlus !

Thank you, the electronic cookies were really yummy !

I'm new to the English Wikipedia, however I have already contributed to the French Wikipedia. Anyway, thank you for your welcome and the helpful advices !

--Lvarnet (talk) 09:18, 5 February 2018 (UTC)[reply]

I'm hoping you can help me. Try as I might to find the answer from any number of books/papers, because of my stupidity I just can't understand how neural firing rates/action potentials can both code the Frequency and the Intensity (reflecting amplitude of Basilar Memb. deflection) at the same time. I can understand how one or the other can be coded by the firing rate, but no both at the same time. Say one has a 2000 Hz sound at 20 dB SPL. The result is 2 (at least) neurons - lets assume that by default these a 2 of the "High Spontaneous Firing Rate" neurons - firing as fast as they can phase-locked to every other cycle of the 2000 Hz wave (acting using the volley principle to communicate the Frequency). How, over and above this, is the amplitude of the wave (degree of Basilar Memb. deflection) then also coded by the firing rate?

Yours

Neville Churchill (nevillechurchill@hotmail.co.uk) HenryYevele (talk) 12:30, 9 April 2022 (UTC)[reply]

Hi Neville,

Good question (which is in fact very general and almost philosophical, see this paper by Romain Brette https://www.cambridge.org/core/journals/behavioral-and-brain-sciences/article/abs/is-coding-a-relevant-metaphor-for-the-brain/D578626E4888193FFFAE5B6E2C37E052). In the case of the encoding of frequency there is a clear answer however: the frequency is encoded in the neuron firing rate via two complementary codes. First, there is a "place code": some neurons are tuned to a particular frequency (or rather frequency band), their firing indicate *the intensity of this particular frequency in the signal*. Second, there is also a "rate code": the firing rate pattern oscillates at the same frequency as the sound. This provides a partly redundant coding of frequency which allows theoretically the auditory system to separate frequency and intensity. You can have a look eg at Chris Plack's book "Pitch-Neural Coding and Perception" for more details about the dual code of pitch

Best Lvarnet (talk) 12:52, 9 April 2022 (UTC)[reply]

Catherine Tallon-Baudry page

This is listed as a draft in you user page, but it seems to be live User:Lvarnet/Catherine Tallon-Baudry. God knows what I'm bothering you with this, but, she just wrote a super intriguing paper - https://doi.org/10.1016/j.tics.2022.09.002 - The topological space of subjective experience Bodysurfinyon (talk) 01:42, 17 October 2022 (UTC)[reply]

Hmm you're right, I should remove the page from my drafts as it is now "official" on the French and English Wikipedia -- thanks for pointing this out to me!

Lvarnet (talk) 07:32, 17 October 2022 (UTC)[reply]