[Eeglablist] LIMO request

[Dr Cyril, Pernet]

Hi Tiago Paiva via eeglablist wrote:

> Dear community,
>
> I am thinking of using the LIMO toolbox to conduct an hierarchical analysis
> on my EEG data. I have a design with multiple continuous independent
> variables: see table below:
>
> [image: image.png]
no pics, but I'll guess ...
> Now. I have 270 trials per subject and all data is segmented, with epochs
> marked for rejection (not deleted) - 1 file per subject. For each subject,
> I would like to conduct a 1st level analysis that included bet_adjust
> (ordinal variable ranging from 1 to 5), Expected value (continuous), risk
> (continuous), ambiguity (1-5), and Probability_Win (continuous). The 10th
> column is a vector of 0 and 1's with 0's being the epochs marked for
> rejection - all analysis should be applied only in non-0 epochs.
>
> I have three questions, some more direct but others not as much and I would
> be very grateful if you could assist :)
>
> 1. Should i delete the epochs marked for rejection?
yes remove bad trials -- alternatively using ICA and IClabel, you could 
clean all trials without losing any  (unless that rejection is something 
else, like god vs bad trial responses, in that case keep everything) see 
https://urldefense.com/v3/__https://eeglab.org/tutorials/06_RejectArtifacts/RunICA.html__;!!Mih3wA!Af47nEqfkJ1OUAhbXsxGKIwas3td7gAulU_CJeACdgE8M8Z3UpgwhXOdcXrWmkLEO2mAEI01l14uMKbZ0r25YA$  ; this will 
of course improve the regressions since you have more trials
> 2. Is it possible to include all epochs and work with continuous predictors
> for each trial? I don't see a way of separating my epochs into conditions.
that is no problem for EEGLAB/STUDY, there is no need to separate 
things, in study you specify the subjects and after in design you 
specify what variables to use, for instance bet_adjust as categorical 
variables means make 5 conditions
> 3. Should I do this on the GUI or code for it? Have you ever done such an
> analysis?

here you go

https://urldefense.com/v3/__https://eeglab.org/tutorials/10_Group_analysis/study_creation.html__;!!Mih3wA!Af47nEqfkJ1OUAhbXsxGKIwas3td7gAulU_CJeACdgE8M8Z3UpgwhXOdcXrWmkLEO2mAEI01l14uMKZA60R48g$ 

https://urldefense.com/v3/__https://github.com/LIMO-EEG-Toolbox/limo_meeg/wiki/01.-Preprocessing__;!!Mih3wA!Af47nEqfkJ1OUAhbXsxGKIwas3td7gAulU_CJeACdgE8M8Z3UpgwhXOdcXrWmkLEO2mAEI01l14uMKZa5D84wA$ 

Cyril

-- 
Dr Cyril Pernet, PhD, OHBM fellow, SSI fellow
Neurobiology Research Unit,
Building 8057, Blegdamsvej 9
Copenhagen University Hospital, Rigshospitalet
DK-2100 Copenhagen, Denmark

wamcyril at gmail.com
https://urldefense.com/v3/__https://zcal.co/cpernet__;!!Mih3wA!Af47nEqfkJ1OUAhbXsxGKIwas3td7gAulU_CJeACdgE8M8Z3UpgwhXOdcXrWmkLEO2mAEI01l14uMKb4LwCR8Q$ 
https://urldefense.com/v3/__https://cpernet.github.io/__;!!Mih3wA!Af47nEqfkJ1OUAhbXsxGKIwas3td7gAulU_CJeACdgE8M8Z3UpgwhXOdcXrWmkLEO2mAEI01l14uMKaBCi74vg$ 
https://urldefense.com/v3/__https://orcid.org/0000-0003-4010-4632__;!!Mih3wA!Af47nEqfkJ1OUAhbXsxGKIwas3td7gAulU_CJeACdgE8M8Z3UpgwhXOdcXrWmkLEO2mAEI01l14uMKZ5HjhQ7A$