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Author: Shawn Milleville (137.187.30.---)
Date: 11-03-09 14:40
We would like to perform functional connectivity on datasets acquired while subjects performed a task. However, we would like to perform the functional connectivity with all task-related effects removed.
I'm following the instructions for Simple Correlation Analysis found here: http://afni.nimh.nih.gov/sscc/gangc/SimCorrAna.html
On Step One, I have a question on which -select option I should use in 3dSynthesize. Would the -select allstim option be the correct option, so that I can use it to remove all task and head motion effects? I assume -select allfunc would not be enough, as it would not include the head motion effects.
As an alternative to Step One, would it be okay to use the -errts output from the original 3dDeconvolve command, and continue following the instructions?
I have one more question, more to confirm I'm understanding the processing correctly.
Once I follow Step One (or use the -errts output?), task has been removed from the time series. I no longer need to worry about it, and do not need to include any task regressors once I get to the actual correlation analysis performed in Step Four. Am I following correctly?
shawn
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Functional connectivity with task removed |
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Shawn Milleville |
11-03-09 14:40 |
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Gang Chen |
11-03-09 22:07 |
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Shawn Milleville |
11-04-09 09:45 |
