[Eeglablist] Clarification Needed on EEG Analysis in EEGLAB

[m za]

Thank you  for your  helpful response; I truly appreciate your assistance
and the insights you've provided.
Marjan

On Tue, Feb 11, 2025 at 11:26 PM Makoto Miyakoshi via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> Hi Marjan,
>
> > Secondly, regarding the SIFT software, I am concerned about the
> implications of not meeting the white noise criterion. Would this pose a
> problem, or can the issue be mitigated using surrogate criteria to
> eliminate invalid connectivity?
>
> You can find a list of 8 publications using (group)SIFT in this page.
>
> https://urldefense.com/v3/__https://github.com/sccn/groupSIFT__;!!Mih3wA!CkVfWpP4Gb9QQEs4Ii4vF7qgP7wMcWoxCDQYuDv3n-8sRCQ6KyXNanKvGzkfBdgnQbYCNSvdL8ysEIDeN7tD3iXbFgA$
> Note none of them passed the whiteness test. As the SIFT manual explains,
> this test is stringent.
>
> Not passing the test does not necessarily invalidate your results (sorry
> for using triple negatives...); it just means not all signals are
> extracted.
> Depending on your experimental hypothesis, achieving such a
> perfectionistic goal may not be necessary,.
> As Karl Friston wrote (2012), one observation would be sufficient to prove
> the existence of a talking dog. So, as long as your 'talking dog' is
> present in your results, you are fine. You may be missing programming cats
> and driving rats, but it does not matter to your experimental conclusion.
>
> Makoto
>
>
>
> On Sun, Jan 26, 2025 at 11:09 AM m za via eeglablist <
> eeglablist at sccn.ucsd.edu> wrote:
>
> > Dear all,
> >
> >  I hope this message finds you well. I am reaching out to seek your
> > guidance on two issues I am currently facing regarding EEG analysis using
> > EEGLAB.
> >
> > First, I have a question regarding the channel statistics section. When
> we
> > assess channel normality, I understand that if the channel deviates
> > significantly from Gaussian distribution, we consider it non-Gaussian
> and,
> > thus, not EEG. However, I would like to clarify the general assumption we
> > make about data distribution when we do not have any distribution data,
> > specifically whether we can safely assume it to be normal.
> >
> > Secondly, regarding the SIFT software, I am concerned about the
> > implications of not meeting the white noise criterion. Would this pose a
> > problem, or can the issue be mitigated using surrogate criteria to
> > eliminate invalid connectivity?
> >
> > I would greatly appreciate your insights on these matters.
> >
> > Thank you for your help!
> >
> > Best regards,
> >
> > Marjan
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