RE: Combining Seeds
Hi Humza, Thank you so much for your prompt reply! What is the best way of choosing if a weight of 0.5 and 0.5 would be appropriate, or if unequal weights would be better? If we take the example of...
View ArticleRE: CONN functional Segmentation for non-human data?
following up on this, did you get it to work? Do you have any suggestions? Best Clas
View Articleright kind of files/sequence for field map analysis.
Dear all, I am trying to run a preprocessing job in conn, using 'Spin Echo' files as primary functional images, and Anterior-Posterior(AP) and Posterior-Anterior(PA) resting-state files as the...
View ArticleQuestions on Task-based ROI-to-ROI (bivariate correlation)
Hi Alfonso and others, I am doing a task-based ROI-to-ROI analysis with 12 seeds (and targets) a priori defined from an independent dataset. I have a number of questions related to my analysis. I also...
View ArticleCannot load rest fmri data from HCP
Hello, I'm new to fmri data analysis. I'm trying to load the 4 resting state fmri images into the conn tool box. (the file rfMRI_REST1_LR_Atlas_hp2000_clean.dtseries.nii,...
View ArticleInterpreting "Average" from conn_withinbetweenROItest
Hi, I have used the command conn_withinbetweenROItest to get an average connectivity value for each subject for a specified network. The command takes the average connectivity between all the ROIs in...
View ArticleProblem displaying surface-level analyses
Hi Alfonso, There is a problem displaying results for ROI-to-ROI surface analyses (see attachment). Some of the regions are outside the brain. Could you please advise on how to fix this? Also, are 10...
View Articlehow to download COBRE data
I need to access COBRE Dataset for my project. Where can I find the data?
View ArticleDefinition of contrast for multiple post hoc t tests
Dear CONN user I am struggling with the definition of multiple between-sources contrasts in a ROI-to-ROI analysis. I need to define these contrasts as post hoc tests after running an ANOVA. The general...
View ArticleDiscrepancy between results window and results explorer
Hi there, I would like to export a mask of the regions that are connected to the hippocampus in my second level ROI-ROI analysis. I have computed a simple one-sample t-test seeding from my hippocampal...
View Articledyn ica graph theory problem
hello all; i have 2 group data with 3 sessions and 3 z score data (age,education,test scores). in 3rd session when using dyn ica graph theory, whatever network or seed i choose, got the same result. i...
View ArticleDesign for repeated measures and behavioral variable
I have resting state data for a large group of subjects investigated 1, 2, or 3 times. I would like to model how a variable # impacts rsFC. If I enter the following for 50 subjectsSession1Session...
View ArticleRE: Help with ICA analysis
Dear Conn users, I still don't have any reply, so I insist by reposting my concerns. I have a few questions of clarification regarding ICA analyses. I would like to specify that I have explored Conn's...
View ArticleRE: Questions on Task-based ROI-to-ROI (bivariate correlation)
Dear Alfonso and others, since I didn't get any response, I am also re-posting my questions in case somebody has time to give an insight please. I am doing a task-based ROI-to-ROI analysis with 12...
View Articlehow to test across conditions ?
Dear all sorry to re-start this discussion. I posted on 15.01. but unfortunately had no reply I have 6 sessions (of resting) per subject I want to test session 1 versus session 2 etc... how can I set...
View ArticleDenoised data: order of niftiDATA_Subject*_Condition000.nii file
Hi Alfonso, I am wondering if the niftiDATA_Subject*_Condition000.nii output from the denoising step maintains the order of the original timeseries, or if it becomes concatenated into the order...
View ArticleError at vdm file generation
Hello, I receive this error during VDM file generation for fieldmap distortion correction. I have separate files for the two magnitude and one phase images, and I used "read double-echo timing from...
View ArticleInput to SVD must not contain NaN or Inf.
[b]Hi Group,[/b] [b]Has anyone encountered this error [see below] on a Mac before? It occurs during step 5 / 7 when importing ROI Data. I have traditionally used a windows machine and older versions...
View ArticleTest if BOLD signal in a specific ROI is correlated with my PET signal of a...
Dear all, I would like to investigate if my resting state BOLD signal in a certain ROI is correlated with the PET signal in a certain ROI. For this analysis, I have resting state fMRI data of 20...
View ArticleRE: Error when using Results explorer
Dear experts in the CONN community, I encountered the same error with Mona. I input external ROIs from latest AAL3 template, mostly update thalamus etc... However when I was doing seed-based whole...
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