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.
doug
Katie Bettencourt wrote:
I'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'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?
Katie
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