Hi Carlos,
Did you get any answer of if it is possible to extract %SC from a group of subjects? I'm afraid the only way I know is to do them iteratively as you say. If marsbar is able to do it from a second-level (group) SPM file, then would be keen to know!
Liam
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School of Psychological Sciences
University of Manchester
0161 275 2692
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From: SPM (Statistical Parametric Mapping) [[log in to unmask]] on behalf of Ming-Tsung Tseng [[log in to unmask]]
Sent: 24 April 2012 18:14
To: [log in to unmask]
Subject: Re: [SPM] Compare 2 methods to extract %signal change in MarsBaR
Hi Matthew,
Excellent to get your clear explanation!!
So I can use Method 2 to extract Beta values in a group of subjects, right??
One more question: Since %SC and Beta value can both represent neural response in an ROI, which one is better?......I mean, if I want to extract %SC, I have to use Method 1 which will be performed subject by subject and time-consuming (or any time-saving way to get %SC within many ROIs in a group of subjects)?
Thanks indeed!
Carlos
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