file sizes and storage for big data
Hi, I plan on running 750 subjects, 1 mprage, 1 bold run, through Conn I did a test run of 10 subjects, the raw data was 1.1gb, after preprocessing I am at 17.4 gb raw data and 9.2gb results...
View ArticleCoregistration of Subject Specific ROI
Dear all, I want to use subject specific ROI for performing ROI level analysis , I could not co register the ROI seeds to functional files , Can some one please let me know how could co register ROI...
View Articlesecond-level Seed-to-Voxel error message
Hi Alfonzo, I'm trying to run the second-level See-to-Voxel analysis by doing Results for all sources. During the result explorer, I got an error message titled "Error using save". It said Cannot...
View ArticleModeling of task conditions?
Hi, I am doing functional connectivity on task-state data. I want to compare how removing the task events (i.e., pseudo resting state) differs from keeping the task conditions. For keeping in the task...
View ArticleRE: extract data of second level ROI-to-ROI
[color=#000000]Dear Alfonso,[/color] [color=#000000]I tried version 15.9, 16 b ,15 a and 17 c, failed to find the 'extract values' button.[/color] [color=#000000]Would you please kindly to let us know...
View ArticleAge as a co-variate
Dear Alfonso, in order to correct for the effect of age in resting-state connectivity, when I put in age as a covariate of non interest for a contrast between groups, so [-1 1 0] for [group1 group2...
View ArticleExtreme first-level connectivity preview valu
Hello all, I am getting some extreme values after the denoising step. I ran the default preprocessing steps in CONN and my denoising steps were: bandpass filter [0.008 0.09], simultaneous, linear...
View Articleprincipal component decomposition question
Hi Alfonso, I have a question regarding how to do a PCA decomposition on 6 covariates in my analysis. To give you some background, this was my original question: I am running a within-group bivariate...
View Articlelarge filesize after matc2nii conversion
Dear Conn Experts, I want to extract confound-corrected time course data and checked the box in Setup-->Options-->"Create confound-corrected time-series". I have datasets of 205 images X 2...
View ArticleExtracting large number of ROI-ROI values
Dear Alfonso and other CONN users, I was hoping someone might be able to help with the following: Normally when i am wanting to extract connectivity values between two ROIs I select the desired...
View ArticleRE: file sizes and storage for big data
I would uncheck all of the optional inputs in the setup phase (unless you really need them). You can also delete intermediate files generated during preprocessing (au*.nii, a*.nii, u*.nii). Seed to...
View ArticleRE: Denoising Error
Have you checked whether MATLAB has memory consumption limits? You can turn off java with the -nojvm flag when starting up matlab from a terminal prompt to reduce memory consumption by MATLAB. More...
View ArticlePreprocessing Error
Hello! I have a question regarding a preprocessing step: When I try to remove the first 4 scans of my functional images with the preprocessing step of 'Functional Removal of Initial Scans', functional...
View ArticleICA images
Dear Alfonso, I would like to identify resting-state networks using an ICA approach. The problem is that if I run the analysis selecting all ICA at the same time which I think it is the most powerful...
View ArticleRegression comparison for a 2X2 within sub
Hi there! I'm searching for a way to perform a regression comparison for a 2X2 within subject design, where the 2 levels are time (Pre, Post) and condition (Drug, Placebo). I tried doing regression for...
View ArticleGLM and ANOVA in CONN
Dear Alfonso and CONN experts I want to describe the statistics done in CONN for publication. Is it correct to state that an ANOVA/ ANCOVA model was implemented by a general linear model in CONN? Thank...
View Articlepunc in the review and results explorer?
Dear all, I am currently using the second-level in CONN v17.a, whenever I choose a covariate and check the results: In the preview on the right Panel I see positive correlations with p...
View ArticleProblem in Loading atlas
Dear all , For my study i have used Juelich atlas for seed based connectivity study, During the first level analysis when i click on ROI -to ROI option , I notice that Juelich atlas was not loaded...
View Articlesecond level batch
[code][color=#000000][b]Hello all,[/b][/color][/code][code][color=#000000][b]I am new to CONN (and neuroimaging in general), i'm currently looking at a study with 40 subjects with dementia and...
View ArticleSingle-Subject First-Level r map in nifti
Hello Alfonso and all, I would like to extract a seed to voxel r map for a single-subject from first-level analysis in nifti format. I don't see a way to do this if I just process that individual...
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