RE: Concatenation of AP and PA images for pre and post fMRI analysis
[color=#000000]Hi Smitha,[/color] [color=#000000]I would suggest to simply create two conditions, e.g. pre-rest and post-rest, and associated each condition with the corresponding two sessions. The...
View ArticlegPPI 1st and 2nd levels on already pre-processed images, can I skip...
Hi there, I would like to run a gPPI on images that are already fully pre-processed, from steps performed outside of CONN-toolbox. In other words, I have .nii files that I don't need to run through...
View ArticleWhy does dynamic functional connectivity demands the use of ICA instead of an...
Hey Alfonso, I would love to know why does analysis of DFC usually follows Independent component analysis to define a brain spatial parcellation instead of an atlas? I can't find the reason in the...
View ArticleDenoising options and second level analysis
Hello community, I was reading the theory behind CONN toolbox in CONN website. Under additional denoising pipeline there are few options like ICA, retroicor, GSR etc but I donno where to apply them in...
View ArticleRE: Extract Sorted 2nd Level ROI-ROI Matrix
Hi Alfonso, Thank you for the prompt responses. (1) I did and ROI to ROI bivariate correlation on resting state data using the default CONN atlas (132 x 132). I have 5 sessions of data. For example,...
View ArticleError in loading .mat file
Dear community: I've encountered the below error massage when I was loading .mat file that has been successfully saved previously. Perhaps the mat file became corrupted somehow. So I tried to load...
View ArticleSplitting runs in half in CONN
Dear CONN community, I have successfully imported my fmriprep preprocessed dataset into CONN using the GUI, including the QC transformed covariates. However, I would like to analyze the functional...
View ArticleError in 2nd level gPPI - conn process is looking for condition of non-interest
Hi all! I'm having a gPPI error that I haven't encountered before, using a dataset that has previously worked with this pipeline. In the 1st level tab, I select gPPI analysis and my conditions of...
View ArticleRE: activation in conn.15d
Dear Alfonso, I have followed the steps outlined in this thread, but when I tun th 1st level analysis, I get the following error message. I selected the ROI to ROI and seed to ROI model, but I have no...
View ArticleRE: Continuous subject-level covariate of interest
Thank you so much for the clarification, Alfonso, this is very helpful! Best, Grace
View ArticleRE: Mixed effects model for repeated subjects?
[color=#000000]Thanks Alfonso. I will try to be concise, hopefully this is clear. I have resting-state BOLD scans, my first-level within-subject contrast is ON vs. OFF stimulation, and my second-level...
View ArticleRE: error message: ROI-to-ROI first level
Dear Alfonso, Thank you for your quick and kind response. I have done your suggestion; - I tried to start over all the process from adding ROIs again, running the preprocessing and denoising procedure...
View ArticleRE: Problem with skipping denoising in batch
Hi, I am also dealing with the same problem now. Did you find why Effects of rest and WM etc are still there?
View Articleskipping denoising with fmriprep output
Hello everyone, I have a small confusion, I have been taking fmriprep outputs as input and using them for further analysis in CONN. My confusion is, do I have to go through denoising in CONN or...
View ArticleCONN: how to realize a variable divided by another variable as a new variable...
Hi I am a new user for CONN.My study is about learning. Each participant need scan fMRI twice(before and after learning,mark as pre\ post). I use the learning rate...
View ArticleFailed to display the image
Hi, I have some problems do not how to solve. I received messages after CONN is launched via the trial version MATLAB_2021a with spm12 and conn20b The message shown in Matlab after launching is as...
View ArticleRE: RCOR and RSim: different "measures"
Dear Alfonso, Thank you for your reply! Just to make sure I understood properly (also based on Goelman, 2004 about RCOR): the 1/2/3 represent the radius in the x/y/z directions in which voxels are...
View Articlematrix of TFCE values from ROI-to-ROI analysis
Dear all I need to know what interactions are significate in an ROI-to-ROI analysis. This is easy when I used the parametric threshold, in the second level, the summary variable shows the connectivity...
View ArticleError extracting Grey Matter BOLD signal for subject 1 session 1
Hello, I 'saved as' as conn project so that I could include an explicit mask in the setup tab (the only change). When I clicked 'done' and 'overwrite' I get the following error message about issues...
View Articletask-based gPPI analyses
Hi, Thank you for your help in advance. I have two questions regarding gPPI analyses in CONN. 1. I want to do correlation between the contrast (i.e., condition A > B) value from the gPPI and...
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