[Eeglablist] STUDY- option for 'subtract individual subject mean spectrum '

[M Abul Hassan]

Dear all,

I have created a STUDY with 3 groups and 2 conditions on CONTINUOUS data and want to compare spectrums of three groups. I am trying to use '''subtract individual subject mean spectrum ' but I get the following error

Problem while subtracting mean spectrum.
Common spectrum subtraction is performed based on
pairing settings in your design. Most likely, one
independent variable should not have its data paired.
I am using Matlab xx and EEGlab xxx

Does anybody else had this problem?
Thanks
Best Regards
Muhammad Abul Hasan
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