help > RE: Extracted seed-to-voxel post > pre contrast results
Aug 29, 2022  05:08 PM | Alfonso Nieto-Castanon - Boston University
RE: Extracted seed-to-voxel post > pre contrast results
Hi Hannah,

The data will be sorted in the same order as the conditions were defined in your CONN project (i.e. if the condition 'pre' is listed first in the "conditions list" within the results tab GUI, then the 60 rows will correspond to the 30 subjects pre condition scans, followed by the 30 subjects post condition scans).

Hope this helps
Alfonso

ps. in general the order of those extracted values will match the order of the SPM.xY.VY variable in the SPM.mat file within the same folder

Originally posted by Hannah Lindsey:
Hello! I'm extracting r-to-z-transformed values from second-level results of a seed-to-voxel post > pre contrast. We have 30 subjects (each with pre and post data), but there are 60 rows of coefficients in each of the results.ROIs.[coord].rex.data.txt files. Do the first 30 rows correspond to the pre condition scans for Subjects 1-30, and the second 30 rows correspond to the post condition scans for Subjects 1-30, or vice versa, or something else entirely? We were expecting 30 rows of coefficients (representing post–pre) for 30 subjects, so we're just a little confused. Also, when we use the plot effects function in the GUI, the REX window says there are 60 files selected next to sources... are these 60 files the pre and post scans for each subject?

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TitleAuthorDate
Hannah Lindsey Aug 29, 2022
RE: Extracted seed-to-voxel post > pre contrast results
Alfonso Nieto-Castanon Aug 29, 2022