Hi, I have some basic questions about the movement parameters that are put out by the HCP preprocessing scripts.
1) What is the difference between Movement_Regressors_dt.txt and Movement_Regressors.txt? I would like to use one as a confound. 2) What does each column in these represent? I'm assuming 6 directions of displacement, and 3 for rotation? 3) What are the units in these and the other movement files in the output? mm? voxels? 4) I would like to censor time points with too much motion in Movement_AbsoluteRMS.txt. Is there a specific movement cutoff you recommend? I have made a script that produces a censor file in the fsl format (i.e. columns of all 0s with a 1 at the time point that is censored). Is there a simple way to add that censor file into the existing analysis scripts along with the motion as a confound? Thank you, Michael _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
