On Wednesday, May 2, 2012 at 8:03 PM, Liam Mason wrote:
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---School of Psychological SciencesUniversity of Manchester0161 275 2692________________________________________From: SPM (Statistical Parametric Mapping) [[log in to unmask]] on behalf of Ming-Tsung Tseng [[log in to unmask]]Sent: 24 April 2012 18:14Subject: Re: [SPM] Compare 2 methods to extract %signal change in MarsBaRHi 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