[Eeglablist] Resting state EEG: 1-sec vs 2-sec non-overlapping epochs

[Makoto Miyakoshi]

Dear Tyson,

Try both. What Arno says is right. But the advantage of using 1-s is that
you have twice more epochs to average, so you might grain 1.4 times better
SNR, which you may or may not notice in the results--which is why you have
to try both for comparison.

Whenever you run into A or B questions, always remember that the best
answer is to run both for comparison. This advice may sound stupid but I
mean it seriously. It is a very common pitfall that analysts are forced top
make A or B decision and they do it without explicitly evaluating the
difference in the results.

Makoto

On Thu, Aug 24, 2023 at 9:19 AM Cedric Cannard via eeglablist <
eeglablist at sccn.ucsd.edu> wrote:

> Hi,
>
> Depends on the frequency bin and resolution you need. e.g. for 1 hz, you’d
> want probably 4-s windows to capture the cycles. Otherwise, 2 or 4-second
> windows are commonly used. If I remember correctly, roiconnect segments
> into 2-s epochs so that might be your best choice here.
>
> Cedric
>
> On Wed, Aug 23, 2023 at 09:09, Dr Tyson Perez DC via eeglablist <[
> eeglablist at sccn.ucsd.edu](mailto:On Wed, Aug 23, 2023 at 09:09, Dr Tyson
> Perez DC via eeglablist <<a href=)> wrote:
>
> > Hi all,
> >
> > We are using the RELAX pipeline to clean our resting state EEG followed
> by
> > ROIconnect for analysis. We are trying to decide between 1-sec vs 2-sec
> > non-overlapping epochs. Does anyone have any opinion on whether one might
> > be superior to the other with respect to cleaning?
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