About eeg rereference

[李卫娜]

Dear Jan and other fieldtripers,
I'm dealing with my EEG data. I want to run some cross correlation and coherence on them. The problem is:
1. which reference method will you advise me to choice? my data is reference to the vertex(Cz), i don't know whether it's ok, seems most of you choose the average between left and right mastoid.
2.IF we will do rereference,it's guided in  the m-file 'ft_preprocessing' that we might configure our inputs as
"%   cfg.reref         = 'no' or 'yes' (default = 'no')
%   cfg.refchannel    = cell-array with new EEG reference channel(s)
%   cfg.implicitref   = 'label' or empty, add the implicit EEG reference as zeros (default = [])
%   cfg.montage       = 'no' or a montage structure (default = 'no')"
then, what's the difference between "reref" and "montage"?
      Is the montage structure a matrix, and how it defines?If I modify my data to an average rereference, how will be the input configured?

Best,
Weina LI




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