12 Apr
2012
12 Apr
'12
12:38 p.m.
Hi,
We ran a first-level FIR analysis on our functional data with selxavg3-sess, which outputs a single ces.nii file for each subject containing the contrast images for all timepoints. Now we would like to create an image representing the sum of a subset of these images in a time-window of interest (e.g. contrast4s + contrast6s + contrast8s) and then bring this single 4-8s contrast for each subject forward to the second-level (presumably by concatenating these summed 4-8s images into a single file that mri_glmfit will accept). Could someone advise us on the best way to do these two steps?
thanks, Ellen