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It looks like fslroi is the tool I'm looking for. To temporally truncate a scan the usage would be fslroi <input> <output> <tmin> <tsize> where <tmin> would be zero and <tsize> would be the number of volumes you want to keep. Now I just need to figure out how many volumes make up 7 minutes...


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Bryan's answer is just fine, I just wish to add some fundamentals on the median. A quick look on the wiki page would've told you right away that medians of integers don't necessarily have to be integers when there are an even number of observations. Consider the data set [0 1] - the median and mean are the same, namely 0.5. An uneven number of integers will ...


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You are using the wrong justification for using the median. The only reason you can even consider using a median or mean with Likert data is because there is meaning to values between Likert items. If you have "Agree" and "Strongly Agree" there is definitely the possibility of some value where someone agrees more strongly than agree but less strongly than ...


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The eegkit package for R is a good and open source toolkit for data analysis. It is easy to use and you can get really cool plots.


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