[Eeglablist] Analysis of TMS-induced harmonics in the EEG

[Dr. Michael Villanueva]

And I add PowPowCAT has offers grounded scientific unprecedented clinical insight into the brain for neurofeedback providers.  We have used PPC in our lab since its inception in 2017.

Michael

-----Original Message-----
From: eeglablist <eeglablist-bounces at sccn.ucsd.edu> On Behalf Of Makoto Miyakoshi
Sent: Thursday, January 7, 2021 6:43 PM
To: EEGLAB List <eeglablist at sccn.ucsd.edu>
Subject: Re: [Eeglablist] Analysis of TMS-induced harmonics in the EEG

Dear Juliana,

I have been waiting for a person like you. Thank you for such a nice question.
I am glad because the best way to study harmonics is to use my power-power coupling analysis toolbox (PowPowCAT) which was just published last December. Comodulogram/comodugram is the straightforward metric of cross-frequency power coupling.

https://urldefense.com/v3/__https://www.mdpi.com/1424-8220/20/24/7040__;!!Mih3wA!UoxPibkD5yV6OGwVNDbdkDocyRfWscHLWk_rga1hmv9jvEnybfa7YUMXaF9oCQEvqseqNQ$
https://sccn.ucsd.edu/wiki/Cross-frequency_power-power_coupling_analysis_tool_(PowPowCAT)

PowPowCAT is readily available as an EEGLAB plugin (it's been there since 2017). Please try it out and let me know if it works for your purpose.
Looking forward to hearing back from you.

Makoto

On Thu, Jan 7, 2021 at 12:20 PM JULIANA CORLIER <corlier at g.ucla.edu> wrote:

> Dear list,
>
> I would like to get some expert advice on how to assess/quantify the 
> presence of harmonics in the EEG.
> Notably, our lab is using EEG recordings during repetitive 
> transcranial magnetic stimulation (TMS) and we would like to assess 
> whether the stimulation at a certain frequency elicits an entrainment 
> at the stimulation frequency but also at other frequencies.
>
> My first approach was to check for ‘ratios of frequencies’ that show 
> activation in the time-frequecy domain post stimulation, but that 
> turned out to be a more tricky than I have aniticipated.
> I was wondering if there is a proper approach to harmonics analysis?
> One would think that engineers and signal processing experts outside 
> of neurosciences deal all the time with that.
>
> Any advice is much appreciated!
>
> Thank you!
>
> Juliana Corlier
>
>
>
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to 
> eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to 
> eeglablist-request at sccn.ucsd.edu
_______________________________________________
Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.ucsd.edu
For digest mode, send an email with the subject "set digest mime" to eeglablist-request at sccn.ucsd.edu