Hi,<br>I just ran the mri_glmfit-sim command on our data and there were a couple of things I did not understand.  <br>We had previously ran the same command on fewer subjects and it had taken about 10 days to run.  This time around it only took 2 days even though we had more subjects (there don&#39;t seem to be any errors; it just finished sooner).<br>
Another thing I noticed was that previously the command wrote several folders (ones that measured thickness, sulc, area, etc. both average and difference between the subject groups) into the output folder we specified in the &quot;glmdir&quot; option.  This time it only wrote one (just the average thickness).<br>
<br>As far as I can tell, I followed the command exactly as before (copied and pasted the command) with the same number of interations.  I also followed the Group Analysis tutorial from the wiki.  <br><br>Can anybody shed some light on this?  Why this discrepancy between the two?<br>
<br>Thank you,<br>Devdutta<br>