[Eeglablist] Why most of good 'brain' ICs are 'dipolar' with show 'red'-centerd scalp topos, although 2/3 of the cortex is in sulci?

[Евгений Машеров]

> Hi Eugen,
> 
> I was reading back your past comments, examining your claims with my newly
> learned eyes.
> Here is good news for you about your past statement below:
> 
>> But it seems to me that synchronization can take place, even if weak, so
> 
> that fluctuations at the micro level will also manifest themselves at the
> macro level. One of the possible mechanisms of such synchronization may be
> the *diffusion of ions in the intercellular space*.
> 
> I found a series of studies, provoked by Riera et al. (2012) and concluded
> by Halnes et al. (2016) and Solbrå et al. (2018) (a very concise summary by
> Ness et al. 2022 is also good), support your view that 'diffusion of ions'
> does form monopolar sources.
> 
> The technical level of these studies is, in my opinion as a psychologist,
> over the heads of psychologists and clinical EEG users. I did my best to
> summarize the key points here.
> https://urldefense.com/v3/__https://github.com/sccn/OneOverF/discussions/7__;!!Mih3wA!Fp5iV_yQ2HQuFYO8GidZBqjXKbXZdN8-KBQDG-sHwFpaP-Q79JBfAcBK2PLV8_HNAaw5qi4vgKynfmDptau9jJKyUCo$
> 
> If I understand their conclusion correctly, the non-ohmic
> environment emerges transiently due to the time lag (relaxation) of ionic
> diffusion (aka electrodiffusion) before stationary and ohmic environment is
> established. Basically, in EFB and other conventional volume conductor
> theories, these transient phases are omitted for simplification.
> 

Thank you for your support and valuable information.
I'll try to study the material you've provided and understand what changes to my proposed approach should be made based on it.

You Truly

Eugen Masherov