Could I ask a simple question on CARET visualization?

Submitted by Yangmei Luo on
Hi there,
 
I am new to CARET. Could I ask a simple question on CARET visualization?
 
I would like to use CARET to present my two-sample t test activation results in 3D form instead of 2D map from REST sliceviewer. I mapped the results using multi-fiducial mapping (MFM), However, I found the t value of color bar in the 3D map produced by CARET is lower than that in my original 2D map. For example, the higher t value in original 2D map is 4.3 ,but the 3D MFM map is 1.6. So why the t value in the CARET is much lower? Furthmore, I can not figure out what's the mean of zero in the middle of the color bar?  
 
Thank you very much in advance! Any help is highly appreciated. 
 
All the best,
Yangmei Luo

Hi Yangmei,
Are you sure that the range of  the color bar in caret are using the largest value? can the color bar be changed?

Yang



------
Qingyang Li

Balance and focus.


On Tue, Oct 15, 2013 at 8:41 AM, The R-fMRI Network <rfmri.org@gmail.com> wrote:
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

By 罗扬眉 (Yangmei Luo)
Hi there,
 
I am new to CARET. Could I ask a simple question on CARET visualization?
 
I would like to use CARET to present my two-sample t test activation results in 3D form instead of 2D map from REST sliceviewer. I mapped the results using multi-fiducial mapping (MFM), However, I found the t value of color bar in the 3D map produced by CARET is lower than that in my original 2D map. For example, the higher t value in original 2D map is 4.3 ,but the 3D MFM map is 1.6. So why the t value in the CARET is much lower? Furthmore, I can not figure out what's the mean of zero in the middle of the color bar?  
 
Thank you very much in advance! Any help is highly appreciated. 
 
All the best,
Yangmei Luo

Online version of this post: http://rfmri.org/content/could-i-ask-simple-question-caret-visualization


YAN Chao-Gan

Tue, 10/15/2013 - 21:39

Permalink

Hi Yangmei,

I only know a little about Caret, currently I am using BrainNet Viewer (http://www.nitrc.org/projects/bnv/) more.

I would try:

1. See AFM;

2. Check the min and max values in "Metric" page;

3. Also test in BrainNet Viewer.

A possible explanation could be that "4.3" are some values in white matter which are not projected to the surface, but I am really not sure.

Best,

Chao-Gan

呵呵，也同样学习了
At 2013-10-16 21:50:13,"The R-fMRI Network" <rfmri.org@gmail.com> wrote:
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by songtianbin (zifan)
你好，发错了！我不是你想发给的人
在 2013-10-15 20:41:45，"The R-fMRI Network" <rfmri.org@gmail.com> 写道：
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

By 罗扬眉 (Yangmei Luo)
Hi there,
 
I am new to CARET. Could I ask a simple question on CARET visualization?
 
I would like to use CARET to present my two-sample t test activation results in 3D form instead of 2D map from REST sliceviewer. I mapped the results using multi-fiducial mapping (MFM), However, I found the t value of color bar in the 3D map produced by CARET is lower than that in my original 2D map. For example, the higher t value in original 2D map is 4.3 ,but the 3D MFM map is 1.6. So why the t value in the CARET is much lower? Furthmore, I can not figure out what's the mean of zero in the middle of the color bar?  
 
Thank you very much in advance! Any help is highly appreciated. 
 
All the best,
Yangmei Luo

Online version of this post: http://rfmri.org/content/could-i-ask-simple-question-caret-visualization




http://www.rfmri.org/comment/2902#comment-2902




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