Extracting volume for different conditions from cluster
Dear all, I had an idea for an analysis but I'm not sure whether it is possible. In my study, patients were scanned twice at resting state (when sick and again after treatment). Using a paired t-test...
View ArticleMNI152NLin2009cAsym or MNI152NLin6Asym from fMRI prep?
Hello users, Can CONN adapt to either MNI152NLin6Asym or MNI152NLin2009cAsym volumes inputted from fMRIprep? Prior threads seem to say that since both are in MNI, they are both ok. The MNI152NLin6Asym...
View ArticleRE: HPC/SLURM Issues with Preprocessing
Good morning, Thank you for your response! I tried processessing a much smaller number, and it still failed to finish, so it seems something else is going on. I checked with my IT, and they had some...
View ArticleExporting ICA 2nd level covariates in CONN 20.a
Hi Alfonso, In the previous conn versions all of the variability and frequency metrics were automatically populated in the 2nd level covariates tab after running ICA analysis, however in the new 20.a...
View ArticleRE: Subject-specific ROIs in CONN batch
[color=#000000]Dear Pavan,[/color] [color=#000000]Your script looks perfectly fine but CONN batch syntax expects cell arrays (instead of strings) in the list of filenames for each ROI, so I believe...
View ArticleRE: error to run ROI-to-ROI analysis
Hi, I'm getting a similar message using an NHP dataset in the standalone installation. ERROR DESCRIPTION: Reference to non-existent field 'displayvoxels'. Error in conn (line 8478) Error in conn...
View ArticleSeed-to-voxel analysis result cluster overlaped with the seed
Hello, I was trying to run a seed-to-voxel analysis but the result cluster located within the seed. Here are some information about this analysis: The seed: I combined a number of ROIs in CONN atlas...
View ArticleRE: How to define "site" as covariate
Hi Till and Alfonso, I was wondering whether all the sites in your data had same fMRI acquisition protocol and scanner models (such as GE / Philips etc)? I am also looking into combining the data...
View ArticleRE: Multiple covariates and scanner-correction
Hi Jiri, On a related note, I am also looking into combining the data acquired from different scanner models (Philips + Siemens) and of course the protocols are not exactly the same. Can the multi-site...
View ArticleRE: Cannot load rest fmri data from HCP
Hi, Did you find a solution to this? I think the problem may lie with them being dtseries.nii files?? But I'm not entirely sure! All the best, Lawrence
View ArticleRE: 2nd level error: dot indexing not supported for this variable type
[i]Originally posted by Alfonso Nieto-Castanon:[/i][quote][color=#000000]Hi Eric,[/color] [color=#000000]Sorry about this, I am trying to replicate this error condition, could you please check in your...
View ArticleRE: Result interpretation help!
[i]Originally posted by Aishvarya Shri Rajasimman:[/i][quote]Dear all, After analysis of resting state fmri between cases and controls in conn I have doubts regarding the interpretation. After setting...
View ArticleImporting time series data and directed connectivity
Hi, How would I go about importing time series data from MATLAB directly into CONN? I'm trying to see if there is any way to import and analyze preprocessed functional time series data without actually...
View Articleerror running out of disk space
Dear community: I am writing because I run out in the middle of processing. Now I have space again and I can't continue nor delete previous pending processes in 'merge' This is the error print. ERROR...
View ArticleBest weighting option for resting state data
Hello all, I have a question regarding the weighting in the first level analyses. I have a group of roughly 100 participants with resting state data. These participants are divided into group A and B,...
View ArticleSample size
Hi everyone, I am studying functional connectivity in children (8-9 years old) with learning difficulties. I have 4 groups of n=20 each one. A referee that reviewed my project wrote that analysis with...
View ArticleVoxel-to-voxel result interpretation
Hi Conn Experts, We are trying to compare gp1 and gp2 using a thresholded PET beta map as a mask. I'm using G-MVPA or G-ICA analysis as these are the only ones with masked analysis option. I've got...
View ArticleHelp: Error during last step of preprocessing
Hi all, I am processing one participant as part of learning to use conn. I am facing an error during the last step and I am not sure how to troubleshoot it. Could someone please help me figure out what...
View ArticleCONN MVPA classifier performance and training/test partitioning
Dear Prof. Alfonso, I have found some interesting results using CONN's MVPA to analyse a rsfMRI data set with 74 subjects. However, I am struggling to find fundamental information necessary to...
View ArticleHelp: filter for successful trials.
Hey there, I am in the process of doing a gPPI analysis with Conn. It is a stop signal task where there is a go and a stop condition. When I automatically upload the .tsv files, there are both...
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