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?
Dear experts,
I saw the option, 'smooth ReHo' in DPARSFA menu.
I read a reference about ReHo analysis, the paper said that it should be smoothed after ReHo.
Is the option for later smoothing after ReHo analysis?
In addition if I selected that option, how about another processing including ALFF, fALFF, VMHC etc?
Are the results of those analysis except ReHo smoothed after, before or none?
I just want to make all kinds of analysis at once.
Does the smoothing process apply to all kinds of analysis identically?
Hi,
I'm encountering a strange error with the bet procedure. That is, I tried to process two persons at once and then I get an error with bet when processing the second person. But what I don't understand is that if I process the two persons seperately, it all works fine for both persons. Here is the error I encounter: