[FieldTrip] Implementation for wavelet-enhanced ICA

[Jan Ostrowski]

Dear FieldTrip community,

I have been wondering whether there is an implementation in FieldTrip 
that allows the use of wavelet-enhanced ICA, since I have not been able 
to find one yet.

My aim is to preprocess EEG data that should later be used for analysis 
of phase-based connectivity. However, conventional ICA is said to cause 
distortions in amplitude and phase, and therefore lead to confounds in 
the data when analyzing connectivity. In wavelet-enhanced ICA, on the 
other hand, one would use discrete wavelet transform on the 
artifact-related independent components to filter out the artifacts and 
keep the components, rather than rejecting the whole component and with 
it also valuable signal. That is my understanding at least, so far.

If there is no such implementation in FieldTrip, can you think of other 
toolboxes that might have it? Maybe somebody implemented this in the 
past and could give some pointers on the exact steps of computation.

Any advice is greatly appreciated!

Many thanks!
Jan Ostrowski

-- 
Jan Ostrowski, M.Sc.
Department of Systems Neuroscience
University Medical Center Hamburg-Eppendorf
Martinistr. 52
Building W34, Room 320b
D-20246 Hamburg, Germany

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