Help masking CSF and White Matter
Hi, I am using CONN to look at cortical connectivity from some subcortical seeds, and I'd like to view Seed-to-Voxel second-level Results with the connectivity maps masked to only show on gray matter,...
View Articlesecond level ROI-to-ROI "import values"
Hello CONN experts, With CONN v17, I am performing ROI-to-ROI second level analysis. Then I imported connectivity values between certain ROIs into 2nd level covariate by clicking "import values". I...
View ArticleCONN17 - Step-wise normalization gone?
What happened to the preprocessing option from earlier CONN versions that allowed one to apply the normalization parameters from the structural data to functional data? I have a few patient scans where...
View ArticleError in Seed-to-Voxel second-level results
Hi, When I press "Results for all Sources" in Seed-to-Voxel second level results I get the following error ------------------ ERROR DESCRIPTION: Index exceeds matrix dimensions. Error in conn_process...
View Articlesecond level analysis
Hello Conn experts and happy new year, I have a question regarding second level analysis, between sources contrast: I need to explore the connectivity difference between language, visual and 2 other...
View ArticleRE: Bizarre denoising & 1st lev analysis preview
Dear Alfonso, thank you for your response. Finally I have found my Conn project troublemaker. It turned out that datapaths of my functional data lead to smoothed images in encoding (project 1), but...
View ArticleSPM Display
Hello, I have attached an image of a cluster found in my second level results explorer (seed-voxel). This was found using a two sample t test [1 -1] between subjects contrast. The voxel level...
View ArticleMVPA & Behavioral Measure
Hello, I have a group of participants who underwent resting-state fMRI and a behavioral measure outside of the scan. I would like to use a data-driven whole brain approach (i.e. MVPA) to find which...
View ArticleSubscript indices must either be real positiv
ERROR DESCRIPTION: Hi all and Happy New year Any idea about the orgin of this error would be highly appreciated. Many thanks, Maria ----------- Subscript indices must either be real positive integers...
View ArticleROI file from SPM created outside of CONN
Greetings, I am hoping that someone can point me to a function (MATLAB or not) that will take a *.nii file generated outside of CONN, conduct thresholding (and binary transform), and produce an ROI...
View ArticleGroup ICA Bias on Second Level Effects?
Dear CONN-artists, Is it reasonable to assume that second level group comparisons of reconstructed ICA maps between groups of unequal sizes may be biased by the estimation of the group level ICA...
View ArticleGroup ICA w/ multiple Sessions?
Will the CONN automatically concatenate multiple sessions together to estimate group ICA? That is if I have 2 task sessions and 1 rest session, will ICA components be estimated from the concatenated...
View ArticleError during first-level analysis
Hi all started getting an error message today, that I haven't seen before. First-level analysis gets stuck because of it. Any idea how to proceed? Thanks E. ERROR DESCRIPTION: Error using...
View ArticleHappy new year
Happy new year to all CONNers out there! A couple of quick news: 1) we are in the process of applying for a software development and maintenance grant for CONN. We need to show some measures of impact,...
View ArticleConnectivity within network
Hello, I have a few basic questions regarding setup for within network connectivity. I am interested in looking at difference within DMN connectivity between four groups. 1) Under Setup --> ROIS, do...
View ArticleRE: Visuals in Denoising step
Hi Pravesh, Once again thank you for all the help. I would like to add "Age" as a regressor in my analysis of the 4 groups. Would you be able to guide me through the approach in CONN?
View Articleseed-to-voxel coordinate for F-contrast
Hi Alfonso et al., Before describing my question, I want to thank you and the other CONN folks for providing this wonderful tool and for maintaining this forum. It's a remarkable feat! Earlier today,...
View Articlegraph theory
In graph theory of conn, 1. clustering coefficient value is mean "global version(global clustering coefficient)"? or "local version(local clustering coefficient)"? 2. what is "cost"&"degree"...
View ArticleInterpreting ANCOVA and multiple regression
Dear Alfonso I have two questions regarding multiple regression and ANCOVA models and I would appreciate your help: 1) ANCOVA: I have 2 groups of subjects, 4 clinical scales with scores for the two...
View Articleprocessing fMRI files
Hello, I am trying to generate ROI-to-ROI correlation matrices for subjects with an in-house data-set. I have noticed that the correlation matrices differ from run to run. Typically this may mean that...
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