To obtain the common regions, first binarize the clusterwise significance maps with something like
mri_binarize --min 2.0 --i clustersigmap1.mgh --o bin.clustersigmap1.mgh
Same for the other groups
Then take the intersection
fscalc clustersigmap1.mgh and clustersigmap2.mgh -o intersection.mgh


On 7/27/2020 2:17 PM, Sunil Khokhar wrote:

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To operate the visualization and obtain the common regions of my between-group difference results and the correlation results in one image. In other words, overlapping/ superimposing my correlation results on the between-group results (to obtain the common regions from the two separate analysis).

Thanks
_______________
Sunil K Khokhar
PhD Scholar,
Department of Neuroimaging & Interventional Radiology,
NIMHANS, Bengaluru, INDIA.
+91-9413101839


On Mon, Jul 27, 2020 at 8:21 PM Douglas N. Greve <dgreve@mgh.harvard.edu> wrote:
are you asking how to create positive and negative regions or are you asking how to operate the visualization?

On 7/25/2020 9:40 AM, Sunil Khokhar wrote:

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Dear Experts,

I have done a between group (2 groups) difference in whole brain voxel based cortical thickness using QDEC, which showed significant regional differences in certain clusters bilaterally in the brain. I also did a correlation between cortical thickness and behavioral scores separately in these two groups. Now, I want to superimpose regions (clusters) which showed positive and negative correlation on the results/ regions I obtained in my between group analysis. How can I do this?

Thanks in advance!
Sunil.
_______________
Sunil K Khokhar
PhD Scholar,
Department of Neuroimaging & Interventional Radiology,
NIMHANS, Bengaluru, INDIA.
+91-9413101839

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