Regression and bandpass filtering in fMRI
Hi CONN experts, I normally do a regression in my fMRI data to mitigate the effect of nuisance variables/regressors (e.g. movement, physiological artifacts, white matter, csf, etc.). Sometimes I am...
View ArticleFirst level error - group analysis
Good morning everyone. I ran group analysis with three subjects. After the preprocessing step, I got these warnings in MATLAB Command window. warning: set-1 data for subject 1 session 1 not found...
View ArticleHow to merge two different analysis
Hello everyone, I have two groups of patient processed with CONN. I would like to join them in one group to perform the second-level analysis. The two groups have been acquired using the same MRI...
View ArticleRE: FSL preprocessing + conn
Dear CONN experts, I'm trying to import preprocessed rs-fMRI data into CONN for subsequent analyses. The data have been preprocessed according to FSL's melodic pipeline (which included motion...
View Articleabout ROC curve
sorry but I am new about this analysis. I have dataset for 37 person(17 control 20 patient data). I have analysed them seed to voxel, ROI , ica and dyn ica analysis. i want to test them on ROC curve...
View ArticleProblem creating VDM maps for distortion correction
Dear all, When creating VDM maps for distortion correction in my preprocessing, an error occurs in only one patient which is Error using sqrtm (line 35) Expected input to be finite (full error message...
View ArticleProblem creating Results for Second Level ROI-to-ROI Connectivity
Hello all, When attempting to use Results Explorer for any ROI-to-ROI analyses, the following error shows up, and the results are not created as they should be. This error occurs no matter which...
View Articleout of storage?
Hi Alfonso, I'm having issues with storage— Without opening a specific project, conn says there is 0% storage. When I open a project, this doesn't change, and I can't run analyses or access completed...
View ArticleRE: New Bug/Error with Results since 19c Update
Hi Alfonso, Yes this is exactly what I did. I was just unsure if that was the right way to go about creating the design matrix for this scenario. Thank you for your help! All the best, Jacinta
View ArticleRE: Testing an interaction: split or not & issues with "0" coding
[color=#000000]Dear Lucas,[/color] [color=#000000]You may simply add covariates of no interest to your design (e.g. "males, females, score*males, score*females, age, site1, site2") and enter 0 at the...
View ArticleError message in voxel-to-voxel analysis
Dear all, I've run a Seed-to-voxel and ROI-to-ROI analyses without problems. Now I'm trying to perform a Voxel-to-voxel analysis using default parameters, but after finishing the analysis, when I press...
View ArticleRE: Bug report: conn_batch
You're welcome. I'm trying to drive conn_batch() by building the BATCH structure with functions that read parameters from a JSON specification file (which is how I found the bug). This solution would...
View ArticleRE: Defining descriptions for L2 covariates (subject effects and groups) -...
Ok, thank you Alfonso. The solution of running conn_batch() twice is quite suboptimal if the use-case is to drive conn_batch() by building the BATCH structure with functions that read parameters from a...
View ArticleTask-residual Functional Connectivity and gPPI
Dear experts, I'm trying to use conn for ROI-to-ROI analysis with block-design task. It seems to be two approaches for it. Approch1: As described in 'Task-residual Functional Connectivity of Language...
View ArticleReloading a project can't find *dmn.nii file
Hi, I am trying to reload a previously processed analyses (it was a seed to voxel analysis) as I want to get more information out of the results. I have tried reloading the .mat file and then showing...
View ArticleRE: No Significant Results
Dear Laura, In analysis results window, the threshold you set is for connection level only. In reults explorer, by default, p<0.05 uncorrected for connection level and p<0.05 pFDR corrected for...
View ArticlePreprocessing algorithm changes between CONN 17 and 19b?
Hi all, While trying to figure out why I couldn't replicate a coworker's preprocessing output, I tried running identical data and preprocessing setups through CONN 17 and CONN 19b, and found that even...
View ArticleRE: FSL preprocessing + conn
[color=#000000]Dear Alfonso,[/color] [color=#000000]thank you so much for your feedback.[/color] [color=#000000]Indeed, while I'm able to open/view that file in mricron or fsleyes, I cannot view it in...
View ArticleNew CONN update and the matrix in the ROI to ROI \How to visualise the matrix...
Hi all So for the new CONN update in the second level ROI 2 ROI analysis. You can explore the results. When way of showing the result is display the connectivity using a matrix instead of the connected...
View Articlereporting a bug in CONN
Dear Alfonso, I found a bug in conn. I ran a regression analysis, and "results explorer" window showed a cluster (26,-90,28), the details of this cluster were shown: size: 160 size p-PWE 0.000263; size...
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