Submitted by insular on Tue, 05/28/2013 - 19:34
Dear Dr. Dong
I notice a new function added into REST Image Calculator, "corr(i1,i2,'spatial')" .
What is the 'spatial' correlation between image 1 and image2?
Is there any ref. about this 'spatial' correlation?
Thanks.
Submitted by jigongjun on Sat, 06/01/2013 - 18:17 Permalink
Re: Added new function of "corr(i1,i2,'spatial')" in REST ...
Hi,
Since Dr. Dong has graduated, he may not notice this message.
Here, I'll try to explain "corr(i1,i2,'spatial')".
Image i1 has a number of voxels with different values. They could be considered as a time cource (e.g. TC1).
Image i2 has a number of voxels with different valuse. They could be considered as a time coures (e.g. TC2).
"corr(i1,i2,'spatial')" is the Pearson's correlation analysis between TC1 and TC2.
Hope this is helpful to you!
Gong-Jun
Submitted by insular on Sun, 06/02/2013 - 20:04 Permalink
Re: Added new function of "corr(i1,i2,'spatial')" in REST ...
Dear Gong-Jun ,
Thanks a lot for your explaination. I understood the meaning of this function.
Is there any paper using this spatial correlation?
Submitted by jigongjun on Mon, 06/03/2013 - 00:47 Permalink
Re: Added new function of "corr(i1,i2,'spatial')" in REST ...
Sorry for my misunderstanding.
I don't know if any paper used this function either. By the way, why this is important for you?
Gong-Jun
Submitted by YAN Chao-Gan on Tue, 06/04/2013 - 06:52 Permalink
Re: Added new function of "corr(i1,i2,'spatial')" in REST ...
There are lots of papers using ICA need such a function, although not throgh REST:
Template matching - find a component with the highest spatial correlation with the network template.
Best,
Chao-Gan