Hello Everyone,
I am having trouble with baseline removal when creating an epoch containing 1 trial. After creating the epoch, a window pops up that reads "remove mean of each data channel", rather than the window that allows you to specify the time window for baseline removal. I am also unable to later remove baseline by going to "tools" --> "remove baseline". How may I baseline correct this segment using a window of -200 to 0 (rather than the default -1000 to 0)? Is there a way to change the default settings of the baseline removal in eeglab?
Thank you!
Best,
Ariel
Hello,
there should not be a problem with having only one trial. Maybe the problem is the length of your epoch... what is the duration of the epoch?
For this type of processing if you don't need to be in the eeglab gui I would reccommend just working on the EEGLab structure from the Matlab space.
For this just take the mean of the time points in the baseline using the EEG.times to make a set of indices matching the times of your BL and subtract it from all data in the epoch.
You can then apply this back to the EEGLab gui by using eeglab redraw function in the command line.
Thank you Joao and Nik for your replies.
I was able to baseline correct from the command line/Matlab space, as you suggested Nik. I used the following code, which saves a new dataset with the applied baseline correction:
pop_saveset(pop_rmbase(EEG, [-200, 0]), 'filepath', 'C:\Users\s15aa\Downloads\eeglab_current\eeglab2021.1\EEG Epochs and Baseline Correction\PSVTR08_hard_baseline_corrected')
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