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静息态研究

各位老师:
      大家好!我记得曾经看过一篇文章上说静息态默认网络中的脑区在有刺激的作用下时信号会降低,但现在一直没找到当时看的那篇文章,想请问各位老师是不是真有这个结论,如果有含有这个结论的文章能否给我传一份?谢谢!我的邮箱是:qiuwenjuan1014@yahoo.cn

REST codes analysis

Thanks to Guillaume Flandin's m2html, the whole up-to-date REST codes is analyzed in html web format at:
 http://restfmri.net/pub/rest_20090422/doc/ .

ReHo: quickly get the ranks for matrix

Hi, Xiao-Wei

I just write these here and suggest you use methods below to get the ranks more quickly:
(here I suppose symbol V means a 4D fMRI matrix)
%-----------------------------------------------
[Y,I]=sort(V,4);
[X,R]=sort(I,4);
%-----------------------------------------------
R should be the ranks 4D matrix, which can be used for ReHo computation. These two lines code make computation faster in MATLAB (around 10s for one 4D fMRI data).

Say hi to your guys
XINIAN

RE: long mixed session of rest and task

A long session, 22 minutes: Resting state 9 minutes, and then a blocked design (2 minutes task + 30s rest) 13 minutes. The questions are:
(1) Is the head motion a concern?
(2) Can the 9-minutes rest be used as a baseline for the data analysis of the blocked design?

My answer:
(1) Yes. There may be more head motion for such a long session. But occasionally, a long rest is necessary (e.g., epilepsy and sleep study).

Some Useful Programs

                                                                   &n

关于去除头动的影响的一个小问题

我想请问一下rest中fc.m关于去除头动干扰的源码程序
if ACovariablesDef.polort>=0,
thePolOrt =(1:sampleLength)';
thePolOrt =repmat(thePolOrt, [1, (1+ACovariablesDef.polort)]);
for x=1:(ACovariablesDef.polort+1),
thePolOrt(:, x) =thePolOrt(:, x).^(x-1) ;
end
end
% switch ACovariablesDef.polort,
% case 0,
% thePolOrt =ones(sampleLength, 1);
% case 1,

Out of memory--Error message for running ReHo and FC tools

Dear REST experters:

      I am new to run REST toolbox. When running ReHO and FC, get the following error messages. I don't know what wrong I did. BTW, do you have some stand along program or easy tools for extracting the time course data. Thanks in advance.

Haibo

error messages:

ReSample Mask in REST

I public a mail concerning about how to resample a mask when defining a ROI.

The script is attached at the end of this topic and should save as "rest_reSample3D.m".

It is just used to do with mask, and no warranty I could give, although Bui verified the script and it worked.

The way of using this resample script is to put it in REST's directory and

Result Mask=rest_reSample3D(Original Mask, You Desired Dimension);

Examples could be reviewed in the following mail.

Just a Quick Suggestion at Midnight!

Hi My Friends,

I am saying hi to you guys all. Long time no visiting the forum, sorry, recent life is really filled with all things. Just go through all posted messages and push a possible step for REST:

Perhaps it is a pretty good idea for adding task-data-based functional connectivity into REST, i mean functional cnnectivity and ReHo, ALFF/fALFF all these stuff can also be made bu such a way. Look the requests from users from their posts.

All In Advances

Xi-Nian

REST software manual in PDF format

Hi, there,

   Do you have the application of REST software in PDF format? If any, pls let me know where I can download since I have downloaded the document of data process using REST in videotype and REST-software in SPM extension. Thanks in advance.

Haibo

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