[Eeglablist] Is it problematic to run ICA on an EEG recording, reconstitute the data without noise IC's, and rerun ICA on that cleaner reconstituted data?

Victor Pokorny pokor076 at umn.edu
Tue Jun 11 11:01:55 PDT 2019

Hi everyone,
I am working with data that is very messy such that, for a given file, the
decomposition will contain a noise artifact IC that accounts for >70% of
the variance. Out of curiosity, I reconstituted the data without that high
variance noise IC (the reconstituted data still looked very messy), then
reran the reconstituted data through ICA and achieved a much more
reasonable decomposition and fairly clean reconstituted data. Any thoughts
as to whether this is an allowable method for cleaning data?
Victor Pokorny

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