Yes, that probably means that your NIFTI files do not contain the actual TR of those acquisitions (when entering TR = NaN CONN will look for the proper TR information first from sidecar .json files in the same location and with the same fielnames as your .nii functional files (in a "RepetitionTime" field), and if those do not exist it will also attempt to read the "dt" field in the NIFTI header to look for this information). To fix this, simply create .json files for your functional data and enter there the proper value of TR for your functional acquisitions

Best
Alfonso

Originally posted by 鹏程 任: