RE: longitudinal scans
[color=#000000]Just remember to create your two conditions, 'baseline' and 'followup', in the [i]Setup.Conditions [/i]tab, assigning them to their corresponding scans/sessions, and then proceed as...
View ArticleRE: ROI construction and 2nd level analysis
[color=#000000]Hi Ishi,[/color] [color=#000000]That error indicates that seed-to-voxel group-level analyses are not ready yet (either you have not yet finished running first-level seed-to-voxel...
View ArticleRE: Issues with surface-based processing
[color=#000000]Hi Kaitlin,[/color] [color=#000000]Regarding (1), one possibility is that those ROIs (e.g. Frontal Pole) might end up having no valid functional data due to signal dropout and...
View ArticleRE: How can I plot effect sizes for an ROI-to-ROI analysis in the standalone...
[color=#000000]Dear Tsev,[/color] [color=#000000]In more recent versions (19b or above) the 'plot effects' option is also available in the ROI-to-ROI result explorer window (and it works just the same...
View ArticleCalculating the adjusted connectivity matrix
Hi all, I'm making a ROI-ROI analysis using the contrast [1 0 0 0 0] (SUBJECTS, AGE, MOTION, CARDIO, MEAN_CONNECTIVITY). The database has 535 participants with the age ranging 18-88. The ROI.mat file...
View ArticleHelp Clarifying What QA_MaxMotion Values are CONN
Hello, I would appreciate getting insight on the QA_MaxMotion co-variate in CONN. I used a Max Motion threshold value of 3 to exclude high motion participants in my study. I inferred that this was a...
View ArticleRE: Output space: Anatomical scan
[color=#000000]Hi Panos,[/color] [color=#000000]I would suggest to modify the "preprocessing pipeline for surface-based analyses (in subject space)" to:[/color] [color=#000000]1) remove the three steps...
View ArticleRE: ROI.mat - Difference between "y" average and "h:
[color=#000000] Hi Tiago,[/color] [color=#000000]The "results.h" values in those ROI.mat files represent the contrast values (between-subjects contrast linear combination of regression coefficients...
View ArticleNuisance regression with bandpass filter problem 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 ArticlePreprocessing multiband resting state scan with fast TR
Hi there, I am a relatively recent CONN user and neuroimaging enthusiast. I have been tasked to analyse some resting state data acquired over 10 minutes (500 volume, 1.5 TR, acquired multiband and...
View ArticleRecommended Confounds from fMRIprep for denoising in CONN toolbox...
Hello experts, I am working with resting-state data from ~200 subjects. After preprocessing it in fMRIprep, I want to apply smoothing, then denoising in CONN toolbox. What are the recommended confounds...
View ArticleRE: Error in seed to voxel analysis: Source not found in global source list.
I'm having the same problem, did you ever find a solution???
View ArticleFC for task-fMRI
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 ArticleError with subgroup covariates and "NaN"
Dear Alfonso Dear Conn-Users When testing this combination in the seed-to-voxel analysis: -males (coded with "1", otherwise "0") -females (coded with "1", otherwise "0") -clinical_score_males (values...
View Articleplot in CONN
Dear CONN community: I did SBC analysis with CONN and got the slice view plot and surface plot. Now I got another analysis result from different software for the same dataset, and I am wondering...
View ArticleRE: Sliding window analyses - issues at denoising step
[color=#000000]Just bumping this up in case the thread got missed.[/color] [color=#000000]Thank you[/color]
View ArticleRE: Moderation Analysis
Hello, To be more specific about this question following the contrasts I ran below to probe a significant moderation in seed-to-voxel analysis, what does it mean theoretically for example to find...
View ArticleNo Significant Results
My apologies if this questions is basic, I've tried searching through the manual and online tutorials and cannot find an answer. I am using CONN 19.b. My ROI to ROI analyses when displayed in the...
View ArticleTesting an interaction: split or not & issues with "0" coding
Dear Alfonso Dear Conn-Users Previous posts suggest the following 2nd level contrast [0 0 1 -1] for testing the gender by score interaction, using "males" , "females", "score_for_males",...
View ArticleExcluding Subjects in Second-Level Covariates
Hello, I saw that this was a thread a couple of years ago and wanted to see if the protocol has changed. I would like to exclude two participants from a second-level analysis after they had been...
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