Graph Metrics tutorial
Can CONN be used to calculate graph metrics such as small wordless, clustering coefficient and Degree centrality? and if so is there one of your excellent video tutorials I can access? Anna
View Articlebetween/within subject analysis in CONN
Hi, I am planning to run a rs-connectivity analysis combining patients and healthy controls from several studies. Participants from 3 of the 4 studies have data from both Time 1 and Time 2. Scans taken...
View ArticleAutomatically extract timeseries for ROIs (denoised data)
Hi there, When I check the data variable (timeseries) in the data folder file, e.g. ROI_Subject001_Session001 it has 385 timepoints as expected (I recorded 8 resting-state sessions with 385 timepoints...
View ArticleRE: Quadratic model
Thank you very much Alfonso. Just regarding the definition of the contrast, to look at the non-linear effect of age controlling for gender, would it be: constant, age, age2, gender: [0 0 1 0] ? Kind...
View ArticleRE: warning: no constant term modeled
Hello everyone, I am wanting to test whether the association between trait and functional connectivity is different between my two groups and have set up the group comparison like so:"GroupA",...
View ArticleRegarding using a new atlas in CONN
Dear Alfonso and other CONN users, I am using CONN to understand dynamic functional connectivity and I would like to extract the time series for the ROIs..But in my analysis, I do not want to use the...
View Articlesetting different acquisition orders
Dear Alfonso, I'm trying to combine participants from multiple studies, one of which is multi band and the rest of which have different scan-specific acquisitions (i.e., Siemens vs Philips...
View ArticleICA Significant Clusters
Hello, I have run my ICA in CONN, and a number of my IC's have significant clusters between my groups. Does this mean that network XX (for example), has a different correlation with ROI YY, between...
View ArticleSurface-based Preproc: Substitute CAT12 output for Freesurfer output
I'm new to CONN toolbox preprocessing pipelines. I need to preprocess using the surface-space pipeline (defaultSS) I began by preprocessing my anatomical data using CAT12 because the Freesurfer...
View ArticleRE: CAT12 Surface-based ROIs as seeds in CONN analyses?
[i]Originally posted by Patrick McConnell:[/i][quote]I am also interested in using CAT12 surface files instead of freesurfer for conn analyses.[/quote] [color=#000000]Any luck on this Patrick? I'm...
View ArticleLongitudinal doubts
Hi, I would like to add some comments to my previous post: Dear CONN users, I'm performing a longitudinal analysis with two temporal points (pre - post). I was wondering if CONN introduces any kind of...
View ArticleIssue with Importing Values
Hello, I am running a Seed to Voxel analysis looking for effects of age (1) while controlling for motion (0). When I select 'import values' and obtain the second-level covariate values, I am exporting...
View Article2 groups and 2 runs
Dear community I have two groups which have two runs/sessions. One group has condition A (uninformed) and A in both runs, the other group has condition a and b (informed) Now I defined 4 conditions in...
View ArticlegPPI deconvolution work-around for event-related data
Hi there! I'm new to CONN and absolutely love it so far, but I've hit a bit of a roadblock and would love some advice. I am planning on running whole-brain ROI to ROI gPPI analysis on a somewhat fast...
View ArticleRegression for behavioural variable
Hi Alfonso, I would like to evaluate the effect of pain on rsFC of the thalamus. For Subject-Effect, I have the following contrast: Allsubjects - Sex - Pain; [0 0 1], Conditions: rest [1], and seed...
View ArticleConcatenated files set up error
Hi Alfonso, I have an error for the set up step (see below) for previously concatenated files. They were concatenated in CONN as you previously advised (see forum post Combining several resting state...
View ArticleUncorrected p-values different when analyzing ROI-to-ROI connectivity in CONN...
Dear Alfonso and other CONN Users, When analyzing the effect of my variable of interest on resting-state ROI-to-ROI connectivity using CONN results explorer, I obtain a beta value of 0.03 and an...
View ArticlePaired T-test
Dear experts I have 40 subjects each with two sessions (pre and post treatment). Each session contains 2 runs of rs-fMRI. This leads us to 80 subjects where the first 40 correspond to the pre treatment...
View ArticleCONN and fmriprep - error loading confounds
Hi all, I am using CONN 19c for connectivity analysis in a resting state dataset where I ran fmriprep for preprocessing. I get an error in CONN when loading one of the confounds from the confounds.tsv...
View ArticleBrain Correlation Map
Hii Alfonso, This might be pretty silly doubt, but I would like to plot a 3D-seed brain correlation map for my resting-state data (See the attached figure below). Do I need a correlation matrix to have...
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