Hello,
I'm trying to use the segmentation files (c2,c3) to extract the white matter and csf time series from my functional scans for use as a nuisance regressor. Segmentation worked fine, but when I go to do the ROI time series extraction with the segmentation masks, the following error occurs:
Can someone offer some advice, I'm a bit stuck.
Thanks
Is GRF correction in DPABI different with REST Viewer? I applied GRF correction and found positive results using REST viewer, but when I using DPABI to confirm, no cluster was shown. Why is this? And how to address this problem? Thank you!
Hello,
I was playing a little bit with the standardization tool and wanted to z-standardize some nifti files I created. I got the following error:
Hey,
I apologize for the many question, but again I'm stuck and looking for some advice ;).
After processing of the RS data, DPARSF gives me a filtered 4DVolume file. I want to extract the timecourse of single within brain voxels to calculate some own value and create a nifti in the dimension of MNI space which I can overlay with the ICBM template for example. My approach was to coregister (Est & Resclice via SPM gui) the 4D nifti file to the wAutoMask file, multiply them and then extract the voxels.
Dear DPARSFA experts:
Hi Chao-Gan,
I have encourtered some problems while normalizing the original data by DARTEL. Matlab reported that "Index exceeds matrix dimensions" (Please see figure for detail), but I did not know what it exactly meant. It should be noted I have successfully preprocessed the same data before with different smoothing kernel.
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I will be really appreciated if you help me deal with this headache. Thank you in advance.
Best,
Vincent
Hi,
I'm trying to analyse ReHo with a one sample t-test and I'm not sure if I'm doing it correctly :-/. At first I generated a group mask with 90 %. Then I used the statistical analysis toolbox for calculating a one sample t-test with the swz ReHo-maps and used base 0 as I read in this post: http://rfmri.org/content/one-sample-t-test-results-reho.
Hi everybody,
would you please allow me three quick questions on the scrubbing procedure as implemented in DPARSF (I have been using version V2.3, 130615, for this particular work)?
In the GUI, I have ticked the "head motion scrubbing regressors" box under "nuisance covariates regression", with the default settings (Power et al., FD threshold .5, time points before: 1 and after: 2, method: use each bad time point as a regressor).
Dear Chao-Gan,
My experiment is mixed-factor design, with group (3 levels) as a between-group factor, and session (2 levels, pre- and post-intervention) as a within-group factor. I am not only interested in the main effects but also the interaction between group and session. Someone suggest me to use the flexible factorial design in SPM to calculate the main effects of session and the group*session interaction, and use the full factorial design to calculate the main effects of group. Still, I wonder if I can calculate the group*session Interaction in Rest or DPABI?