我用rest中的functional connectivity做两个脑区的相关行分析，分别选择了两个脑区中的某一个体素作为ROI，进行相关性分析。不同的是数据预处理时高斯平滑核分别选择4和6进行处理。得到的结果却相差很大，有的出现一次正相关，一次负相关，有的出现两次相关性相差几十倍。想请问各位老师：改变高斯核会有这么大变化吗？还是这个情况属于不正常，可能是处理步骤出了问题？
按照DPARSF做了数据的分析后，对于结果我们怎么评价呢？是不是结果难以解释就是不可信的？请问如何了解数据的可靠性？是不是和前人的观点一样就是正确的呢？觉得有些茫然。。。
Is there any paper about data processing method and mode processing method?
我想用rest中的功能连接分析我的静息态数据，在预处理时需要做高斯平滑，我查了一些文献在高斯核的选择上有选择8、6、4的，想向各位老师请教下做静息态分析时一般选择多少比较合适？我之前用rest中的reho做过分析，里面有一步是选择mask，我选择的是rest中mask中的Brainmask。想请教下这个Brainmask是怎么来的？是在MNI空间下的吗？
Dear REST developers,
When I attempt to run the functional connectivity pipeline in the program with a single subject 4D analyze format image with no mask it returns the message below. What does this message mean? How can I fix it?
thank you,
Dominic
Ideal rectangular filter: "/data/blinky/work/dominic/seed/test_1/1005031/rest_trial"
Read 3D EPI functional images: "/data/blinky/work/dominic/seed/test_1/1005031/rest_trial".
Hi, I have a question regarding how to obtain the Zscore. Particularly I don't know how to calculate the correction for the degrees of freedom (that seems to be a value around 2), since I could not find the actual calculation. Does anyone know how it is calculated?
Also, I would also like to use the Yan's program called y_Corr2p(r,n). But I don't understand what the "n" is. In the comments of the program it says that is the number of pairs, but I don't understand.
thanks a lot, many greetings
Pablo
Dear REST developers,
I'm trialling the REST program using a single subject and specifying a voxel wise ROI. Each time I try to view the ROI as outlined in the manual or run the analysis it produces this error:
Exception occured. (MATLAB:dimagree)
Error using ==> eq
Matrix dimensions must agree.
Hi, dear all
The output Images of ReHo or ALFF were distored, when I open them with MRICRo.
Please help me, what was happen? attached I send the output image of toolkit.
thanks