my question about Marsbar toolsbox
I have my own mask, so for ROI analysis using marsbar tools. if i wanna   upload my mask, did i have to use the build command

Thank you for you help

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To: [log in to unmask]
Date: Tue, 26 Apr 2011 16:10:03 -0400

I'm new on SPM

I have a matrix of 5 

Condition 1

Condition 2

Condtion 3

Condition 4


How to write the matrix of this  contrast on SPM

Contrast : (Condition 1 Vs Baseline) - (Condition 2 Vs Baseline)