[FieldTrip] Baseline correction during ICA & then again before timelock?

[Darinka Trübutschek]

Dear all,

I am using fieldtrip to preprocess (epoching, trial rejection, ICA to
remove eye blinks, etc., filtering) my MEG data and have a question
regarding baseline correction.I have noticed that, in the default settings
for ft_componentanalysis, cfg.demean is set to 'yes', so I assume that the
mean of the entire trial is subrated. What does this setting imply for
future analyses of this data (at the sensor-level), for example timelock
analyses of different conditions. Should one still implement another
baseline-correction? Why/why not?

In advance, many thanks for your help. I very much appreciate all of the
knowledge of this community!

Best,
Darinka

-- 
Darinka Trübutschek (PhD Candidate)

Inserm-CEA Cognitive Neuroimaging Unit
CEA/SAC/DSV/DRM/Neurospin
Bât 145, Point Courier 156
F-91191 Gif-sur-Yvette

website: https://sites.google.com/site/dtruebutschek/
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