So I just need 1 column with a line for each time point that has the weight I want to give the condition that is occuring at that time point?  And what do you mean a contrast will automatically be created for it?  I was trying to use this to find an area that increases with load but then plateaus at a point where subject&#39;s behavioral performance plateaus (so essentially looking for a mirroring of the behavioral data in the neural data), will there just be a contrast created after I run selxavg3-sess that I can bring up with tksurfer-sess afterwards?<br>

<br>katie<br><br><div class="gmail_quote">On Tue, Dec 7, 2010 at 11:40 AM, Douglas N Greve <span dir="ltr">&lt;<a href="mailto:greve@nmr.mgh.harvard.edu">greve@nmr.mgh.harvard.edu</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

It is just a text file with a value for each time point. You can have multiple columns, but if it is a task, then you probably want to keep one to make the interpretation easier. A contrast will automatically be created for it. You can look at the mcprextreg file created by the motion correction to get an idea.<br>


<br>
doug<br>
<br>
Katie Bettencourt wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">
I&#39;m trying to set up an analysis using an external regressor (as part of the mkanalysis-sess stream, -taskreg flag)  in version 5, but I&#39;m not sure what the taskreg.dat file should look like.  The only thing I can find is that it should have a line for each time point.  Does anyone have any more guidance than this?<br>


<br>
Katie<br></div>
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