Preprocessing error
Dear Alfonso and forum, When I use the conn to preprocess 6 subjects, it works well. BUT when I try to preprocess 127 subjects together,the MATLAB went crash. The error code is shown in the pictures....
View Articleimporting BIDS-compatible condition information
Dear CONN experts, I encounter a problem when specifying condition onsets with BIDS-compatible .tsv files. My data for each subject contain six runs and the *events.tsv files were prepared for each run...
View ArticleUploading seed created outside of CONN for seed-to-voxel whole brain FC analysis
Hello there, I have a unique seed located in the subgenual anterior cingulate cortex (created in FSL) that I would like (if possible) to upload into CONN to run a seed-to-voxel whole brain functional...
View ArticleMethod for the control of atrophy
Dear Alfonso and colleagues I am a pre-doctoral student at the University of Santiago de Compostela. I am conducting a study of aging in the resting state. Specifically I am conducting Seed to Voxel...
View ArticleRE: Atrophy correction
Hi, first of all, I'm sorry for opening up such an old subject. I'm conducting an aging study and I'm interested in atrophy correction as well. I would like to ask you if you found a solution to...
View ArticleRE: Conn installation problem
Hello You had a problem like me. Tell me please how you solved this issue.
View ArticleCONN error message during Outlier detection
Hello, I've been having a problem running the preprocessing step with my fmri data with the same error message coming up during the outlier detection step. I've read about other people having the same...
View ArticlegPPI First-Level Questions
Hi all, I am performing a gPPI analysis with four experimental conditions in an event related design, with fixation crosses between stimuli as the baseline (not explicitly modeled as a condition in the...
View ArticleNifitDATA output file from denoising
Hi CONN team, I am trying to export the denoised nifti data from CONN. From what I gathered from other similar questions on this forum, if I check 'create confound-corrected time-series' in the CONN...
View ArticleQuadratic model
Dear Alfonso, I would like to calculate the non-linear effect of age on the connectivity of some ROI pairs, however, I am unsure about the way to do this in CONN. I was thinking about creating a 2nd...
View ArticleRE: Preprocessing error
Thanks for your reply, But when I finish the "setup" step and press "done", the matlab crash again!!! I am very confused about it as it crashed eveytime when it showed"importing the functional data"...
View ArticleRE: Problem with missing data
[i]Originally posted by Alfonso Nieto-Castanon:[/i][quote][color=#000000]Hi Maria,[/color] [color=#000000]The error message indicates that you have not yet specified the functional data corresponding...
View ArticleRE: Problem with WM, CSF components in repeat analysis
Thank you for your response! I have checked the functional files and ROIs and they match, but of course there may have been an error somewhere. We will continue to investigate and I'll report back any...
View ArticleInterpreting Second Level ROI-to-ROI results
Hello CONN experts, I just finished running an ROI-to-ROI analysis looking at the connectivity in differing age groups in the FPC and DMN while controlling for fitness. I set up my model as an ANCOVA...
View ArticleRE: How is Spatial match to template correlation value calculated?
I found a paper by Grecius et. al. (2004) "Default-mode network activity distinguishes Alzheimer's disease from healthy aging: Evidence from functional MRI", which seems to provide an explanation of...
View Articleusing CONN visualizations with our own data
We use our own code to calculate connectivity matrices (based on the Schaefer parcellation). We were hoping to use the comprehensive visualization that CONN offers to visualize our results. That is,...
View ArticleRE: Voxel-to-voxel: unequal voxels when combing datasets
[color=#000000]Hi Kaija,[/color] Not exactly. Since group-ICA is basically a group-level analysis, running ICA twice, each on different groups of subjects, is not the same running it once on the entire...
View ArticleRE: Conn Denoising Outpout
[color=#000000]Hi,[/color] [color=#000000]For these scenarios I typically recommend option (3) described in https://web.conn-toolbox.org/fmri-methods/denoising-pipeline[/color]...
View ArticleRE: Abnormal file name (wc1meanu*.nii)
[color=#000000]Hi,[/color] [color=#000000]The wc2art_mean_au*.nii files are "corrected" mean functional files created during the ART outlier identification step (simply disregarding the identified...
View ArticleRE: Skull extracted denoised output
[color=#000000]Hi Panos,[/color] [color=#000000]Yes, you are right, that sounds like a product of the percent signal change (PSC) scaling of the BOLD signal, since the estimated global BOLD signal will...
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