Hi, I am interested in using the beta series method (https://neuroscape.ucsf.edu/wp-content/uploads/publications/Rissman2004-Measuring-functional-connectivity-during-distinct-stages-of-a-cognitive-task.pdf) for intra-subject analysis. Is there a straightforward way to do this in FreeSurfer?
I attempted and the following analysis (code starting @ foreach) and an error appeared at the selxavg3-sess step: ERROR: condition ids are not contiguous Should I include a positive contrast for each condition (i.e. instead of '-no-con-ok', use 'mkcontrast-sess -analysis $analysis -contrast $contrast -a $1_to_194') or is something else about the design erroneous? Thank you in advance for feedback. Notes regarding the paradigm file: (1) treats each condition type as a unique event (i.e. second column consists of numbers 1:194; $Nconditions = 194) (2) stim weight == 1 (i.e. third column all ones) foreach cortices ( lh rh ) mkanalysis-sess \ -fsd $fsd \ -surface fsaverage $cortices \ -fwhm $FWHM \ -event-related \ -paradigm $paradigm \ -nconditions $Nconditions \ -spmhrf 0 \ -TR $TR \ -refeventdur $EVENT_DUR \ -nskip $Nskip \ -hpf $HPF \ -analysis bsm.analyses.$cortices \ -per-run \ -nuisreg $MC_nuis -1 \ -tpexclude $MCR_censor \ -force end foreach cortices ( lh rh ) selxavg3-sess \ -s $SUBJECT \ -analysis bsm.analyses.$cortices \ -no-con-ok end ------ Emily M. Hahn | Clinical-Computational Research Coordinator Division of Neurotherapeutics | A.A. Martinos Center for Biomedical Imaging Massachusetts General Hospital/Harvard Medical School _______________________________________________ Freesurfer mailing list [email protected] https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
