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