[FieldTrip] the right normalsation?

[Frank Mei]

Hello FieldtripList,

I am trying to differentiate brain areas responsible for two different
conditions using the method show in the tutorial(
http://fieldtrip.fcdonders.nl/tutorial/beamformer), and so far I have tried
to subtract condition# 1 minus the #2, and divided by the average of the
baseline period (pre-stimuli presentation), i.e., (Post#1-Post#2)./(Average
of Pre#1 and Pre#2). I think this division is for normalisation purposes.
Is this the right normalsation? What normalization do you suggest to use?
Is it necessary to normalise?

thanks
Ye
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