[Eeglablist] Invitation to collaborate on an open paper about EEG’s 1/f power distribution

Sun Nov 9 20:43:46 PST 2025

Dear Makoto and all,

I am interested in joining this project. I have recently submitted my doctoral thesis for examination where I predominantly used 1/f parameters to explore cognitive ageing in the context of nutrition. My current work is in sleep health and biomarkers.

Best,
Steff

---
Stefanie Evas
PhD Candidate | School of Psychology
Casual Academic | School of Biomedicine, School of Psychology

THE UNIVERSITY OF ADELAIDE
North Terrace
E: stefanie.evas at adelaide.edu.au<mailto:fhshr at adelaide.edu.au>

CRICOS Provider Number 00123M
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From: eeglablist <eeglablist-bounces at sccn.ucsd.edu> On Behalf Of Makoto Miyakoshi via eeglablist
Sent: Thursday, 6 November 2025 2:11 AM
To: EEGLAB List <eeglablist at sccn.ucsd.edu>
Subject: Re: [Eeglablist] Invitation to collaborate on an open paper about EEG’s 1/f power distribution

I'm surprised to find many responses in just over a night.

Ivano, Toby, Maruti, Meha, Tzvetomir, Dominic, and Adam--you replied to me
personally. Please reply to the mailing list directly so that other
subscribers can read your post.
Just reply to the list without editing the email title. For more detail,
see this page https://urldefense.com/v3/__https://eeglab.org/others/EEGLAB_mailing_lists.html__;!!Mih3wA!BPiQbrV-eQ7cXQTAeozwIJV84VGCG_HpjMHdu1kxPyOJuNbmldwUuMg4R7aVQUmRjhxB3ZQoPR12o77fCQMdXX3r0GI$<https://urldefense.com/v3/__https://eeglab.org/others/EEGLAB_mailing_lists.html__;!!Mih3wA!BPiQbrV-eQ7cXQTAeozwIJV84VGCG_HpjMHdu1kxPyOJuNbmldwUuMg4R7aVQUmRjhxB3ZQoPR12o77fCQMdXX3r0GI$>

Maybe we need a Google Document Spreadsheet to manage the potential
authors' names.
Can someone volunteer to manage it?

%%%%%%%%%%%%%%%%%%

I was telling Mate and Cedric that I was probably the least interested in
this topic. I was very impressed by Gao and colleague's paper (2017
NeuroImage) that the spectral exponent (SPEX) may reflect E/I balance. But
there are other factors that contribute to SPEX. I thought the most
dominant one was the 'dendritic filtering' described by the cable theory.
If you read Electric Fields of the Brain (2006), you find this is one of
the major sources of the 'low-pass filter effect' and the other factor,
differences in network size across frequencies and spatial averaging
principle at electrode/volume conduction, is more obvious. I want to know
which factor is most dominant in determining the 1/f-ness, AMPA/GABA_A
receptor balance, the 'dendritic filter' by the cable theory, or the
differences in spatial network sizes across signal frequencies, otherwise I
feel uneasy what we are discussing. Note that Voytek lab has been
publishing really solid evidence using simulated, animal, and human
datasets, so I have no doubt there. But still, I want to see by and large
ratio of influence across those multiple factors.

So, what is so interesting about the 1/f-ness? Can anyone tell me please?

Mate and I will meet on Zoom on Nov 7, 11 am - noon in EST (i.e., the New
York time zone). I invite you to jump in if you can make it.

Time: Nov 7, 2025 11:00 AM Eastern Time (US and Canada)
https://urldefense.com/v3/__https://ucsd.zoom.us/j/98219923907?pwd=YkR9t04S7N23IP7Rf1XZXmHvK5LXsY.1__;!!Mih3wA!BPiQbrV-eQ7cXQTAeozwIJV84VGCG_HpjMHdu1kxPyOJuNbmldwUuMg4R7aVQUmRjhxB3ZQoPR12o77fCQMdEZkHooc$<https://urldefense.com/v3/__https://ucsd.zoom.us/j/98219923907?pwd=YkR9t04S7N23IP7Rf1XZXmHvK5LXsY.1__;!!Mih3wA!BPiQbrV-eQ7cXQTAeozwIJV84VGCG_HpjMHdu1kxPyOJuNbmldwUuMg4R7aVQUmRjhxB3ZQoPR12o77fCQMdEZkHooc$>
Meeting ID: 982 1992 3907
Password: 681398

Makoto

On Tue, Nov 4, 2025 at 7:07 PM Makoto Miyakoshi <mmiyakoshi at ucsd.edu<mailto:mmiyakoshi at ucsd.edu>> wrote:

> Hello EEGLAB mailing list,
>
> Some of you may recall the long, dense, and ever-continuing discussion we
> witnessed this summer about EEG’s 1/f power distribution. I’m sure many of
> you wondered, “Can they please stop quoting papers while speaking?” That
> conversation seemed to have ended on the list. But it has continued
> off-list! And now, it has led to the idea of writing a collaborative paper.
>
> We’d like to invite anyone interested to join this open project. You don’t
> need to be a specialist; genuine curiosity and a willingness to contribute
> are what matter most.
>
> If you’d like to participate, please reply to this mailing list so that
> everyone can stay in the loop.
>
> For those curious, I’ve also included below a brief history of EEGLAB
> mailing list–initiated publications.
>
> Makoto
>
> %%%%%%%%%%%%%%%%%%%%
> There have been several papers initiated through collaborations among the
> EEGLAB mailing list community and myself. Perhaps the most memorable one
> was the *ICA's bug *paper:
>
>
> https://urldefense.com/v3/__https://www.frontiersin.org/journals/signal-processing/articles/10.3389/frsip.2023.1064138/full__;!!Mih3wA!BPiQbrV-eQ7cXQTAeozwIJV84VGCG_HpjMHdu1kxPyOJuNbmldwUuMg4R7aVQUmRjhxB3ZQoPR12o77fCQMdB87tEFY$<https://urldefense.com/v3/__https://www.frontiersin.org/journals/signal-processing/articles/10.3389/frsip.2023.1064138/full__;!!Mih3wA!BPiQbrV-eQ7cXQTAeozwIJV84VGCG_HpjMHdu1kxPyOJuNbmldwUuMg4R7aVQUmRjhxB3ZQoPR12o77fCQMdB87tEFY$>
>
> We can find the origin of this project in the following post.
>
> *On Fri, May 7, 2021 at 2:25 PM Makoto Miyakoshi <mmiyakoshi at ucsd.edu <https://sccn.ucsd.edu/mailman/listinfo/eeglablist <https://sccn.ucsd.edu/mailman/listinfo/eeglablist > >>
> **Dear subscribers,
> **Recently, there are multiple independent posts about the data rank issue **with ICA. In response, I am thinking about running a simulation **experiment **with a visiting scholar to SCCN as a small project on this issue for **publication. I would appreciate it if you can give me any of the **following **as an input.*
>
> I made it festive: I invited a high-school intern to join as a co-author
> (his coding skill was GOOD); I also invited a person whose name had been
> mysteriously engraved for over a decade in an annotation of EEGLAB’s code
> in question; I cited four authorities via unfashionable “private
> communication”; and yes, I gave the paper a catchy title that the first
> author did not like… etc., etc.
>
> >* > On Fri, May 7, 2021 at 2:25 PM Makoto Miyakoshi <mmiyakoshi at ucsd.edu <https://sccn.ucsd.edu/mailman/listinfo/eeglablist <https://sccn.ucsd.edu/mailman/listinfo/eeglablist > >>
> *>* wrote:
> *>* >
> *>* >> Dear subscribers,
> *>* >>
> *>* >> Recently, there are multiple independent posts about the data rank issue
> *>* >> with ICA. In response, I am thinking about running a simulation
> *>* experiment
> *>* >> with a visiting scholar to SCCN as a small project on this issue for
> *>* >> publication. I would appreciate it if you can give me any of the
> *>* following
> *>* >> as an input.
> *>* >>
> *>* >> - Questions (what is puzzling for you? No need to be shy for asking
> *>* >> 'dumb questions')
> *>* >> - Requests (if you want to know particularly X and/or Y on this issue,
> *>* >> I may be able to give you the answer based on the simulation test)
> *>* >> - Suggestions (about methods, data type, applications, etc)
> *>* >> - Reports (when ICA failed, what did you see?)
> *>* >>
> *>* >> If you are interested in working with me to make a contribution to this
> *>* >> small project, please reply or contact me mmiyakoshi at ucsd.edu. <https://sccn.ucsd.edu/mailman/listinfo/eeglablist <https://sccn.ucsd.edu/mailman/listinfo/eeglablist > > If your
> *>* >> contribution is substantial, I'll offer you to be a coauthor. Probably
> *>* we
> *>* >> will need as many strange results as possible...?
> *>* >>
> *>* >> Probably this is the first attempt to run an open experiment on the
> *>* EEGLAB
> *>* >> mailing list--please join us and let's find out what happens!
> *>* >>
> *>* >> Makoto*
>
>
>
>
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