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

[Tyson Perez]

Thank you all for your feedback. Much appreciated!

Cheers,
Tyson Perez, DC, PhD

> On Aug 24, 2023, at 09:36, Makoto Miyakoshi <mmiyakoshi at ucsd.edu> wrote:
> 
> 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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>