ROI-to-ROI analyses question
Hi, I have what is probably a rather basic question re. ROI-to-ROI analyses in Conn. I have 2 sets of ROIs, each of the two sets related to a particular function. I have created these ROIs from MNI...
View ArticlePost-hoc t-tests
Dear CONN users, I'm having some difficulties trying to 'speed-up' post-hoc t-testing after doing my original interaction analyses. Some background information: My current setup aims to investigate...
View Articlebetween subject contrasts question
Hi! I am currently working on an analysis looking at cognitive control networks and their correlation to maternal reading fluency in children. When looking at the between subjects contrast in conn, if...
View ArticleRE: Loading multiple ROIs
Hi Alfonso, I recently tried to create another 4D ROI file using the code you send previously. However I got the following error this time when I tried to run it: ------------------------------...
View ArticleCONN preprocessing :normalization error
Hi all I did the pre-processing in may for my data and the process wen so fine , bur now I need to re do it but I got new error that: [color=#993300]** The images do not all have same orientation...
View ArticleRE: Smoothing Following Denoising/Confound
[color=#000000]Hi Thomas,[/color] Regarding the order of operations (smoothing before or after regression) both orders should result in exactly the same results (see...
View ArticleRE: Reference to non-existent field 'mask'.
[color=#000000]Hi Jenny,[/color] [color=#000000]Sorry about that error, could you please send me your conn_*.mat file to help me debug this issue?[/color] [color=#000000]Thanks[/color]...
View ArticleRE: Network Based Statistics
[color=#000000]Dear Ekaterina,[/color] [color=#000000]NBS statistics are appropriate for F-contrasts as well. Both of the contrast specifications ([1 -1;-1 1] or [1 -1]) will work exactly in the same...
View ArticleRE: MP-RAGE structural scan (.nii) all chunky
[color=#000000]Hi James,[/color] [color=#000000]My guess is that this is perfectly fine, the reason why in the 'slice display' window you are not seeing anything may simply be because the...
View ArticleRE: ROI-to-ROI analyses question
http://journal.frontiersin.org/article/10.3389/fnhum.2017.00366/full#supplementary-material hello, here are some methods to construct networks based on ROIs
View ArticleProblems loading functional images
Hi, I manage to load all my structural images, but when I try to load EPIs I have some errors. I converted it because I had 4D files and CONN did not read it. Now is unpredictable, I can load some of...
View ArticleROI to ROI correlation matrix
Dear experts, I analyzed 40 patients with CONN to get the correlation matrix from ROIsignals. I tried it too with Dparsf. With my knowage I thought the result should be equivalent or the same, but I...
View ArticleContent of preprocessed niftiDATA files
Hello, I have preprocessed fMRI data with CONN and would like to access the preprocessed voxel-level time series data. However, the values in these files (range between -1 and 1) seem different from...
View Articlelinear regression motion
Dear experts I would like to know how motion can influence subsequent analysis in conn. It is not entirely clear to me how exactly motion is (linearly?) regressed out (across 3 translational and 3...
View ArticleRE: between subject contrasts question
Thank you for your response! Just for my own understanding what does the main effect of all subjects and TOSREC mean? [0.5 0.5]. I couldn't find it in the manual.
View ArticleRE: Question about ROIs
Hi - I would like to look at each atlas ROI separately in another program. Is there a convenient way to write out the atlas.nii into its component ROIs? Or perhaps download these from online...
View Article2x2 repeated measures ANOVA (Contrasts)
Dear Alfonso, I would like to run 2x2 ANOVA to explore functional connectivity changes in resting state following the implementation of an intervention. I have two groups (control and experimental),...
View ArticlePCA decomposition of behavioural scores
Hi Alfonso, I have a question about how to know what the resulting factors from a PCA decomposition of behavioural scores represent. You suggested that I do a PCA decomposition on 6 behavioural scores...
View ArticleSeed-to-Voxel: height & extent threshold
I am performing Seed to Voxel analysis with pre post conditions: Subject effect selected as QA_Greymatter_vol ; subject-level-contrast 1 Only one seed is selected; between sources contrast 1 When I...
View ArticleAnalysis Space with Freesurfer
Hello, I was hoping to get a little clarification on the 'Analysis Space' step (under 'Setup-Options'). More specifically, if Freesurfer was used for processing the structural images, how do you...
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