October 2011

用dparsf时报错

Submitted by 287391600 on Fri, 10/21/2011 - 10:57

老师：
在用dparsf做处理时总是报如下错误：
Moving Normalized Files:sub001 OK??? Error using ==> copyfile
No matching files were found.

Error in ==> DPARSF_run at 551
copyfile('*.ps',['..',filesep,'RealignParameter',filesep]);

Error in ==> DPARSF>pushbuttonRun_Callback at 935
[Error]=DPARSF_run(handles.Cfg);

Error in ==> gui_mainfcn at 96
feval(varargin{:});

Forums: 
Resting-state fMRI topics

学术报告信息

Submitted by ZangYF on Thu, 10/20/2011 - 06:21

学术报告

1. 认知障碍的影像学检查

报告人：首都医科大学宣武医院神经内科 韩璎 博士

2. 社会老年人神经心理学测查与脑结构磁共振研究

报告人：School of Psychiatry, University of New South Wales，张浩波 博士研究生

时间：2011年10月22日9:00
地点：杭州师范大学附属医院七号楼二楼读片室

主持人：杭州师范大学认知与脑疾病研究中心 臧玉峰 教授

欢迎光临！

Forums: 
Other

REST doesn't support the selected ROI definition now

Submitted by homerzeng on Wed, 10/19/2011 - 06:03

When i try to load a predefined ROI for seed based connectivity analysis, i get the following error:

??? Error using ==> rest_misc>ViewROI at 304
REST doesn't support the selected ROI definition now, Please
check:
/mnt/vpgroup/Greicius_ROI/dorsal_DMN/04/4.nii

Error in ==> rest_misc at 196
ViewROI(AROIDef);

Error in ==> rest_SetROI at 166
rest_misc( 'ViewROI',

Forums: 
Resting-state fMRI topics

Dealing with 2 sessions and use of mask

Submitted by lena123 on Sun, 10/16/2011 - 22:36

I am doing a seed region analysis for the entire n-back acquisition in two groups of subjects. I intend to finally compare the groups for differences.

1. Each subject had 2 sessions of n-back runs. I am able to get the seed region based FC maps and Z maps for each session separately. But how can I get a single contrast file from the 2 sessions for each subject?

Forums: 
Resting-state fMRI topics

关于rest的correlation analysis

Submitted by liufeng on Sun, 10/16/2011 - 11:44

管理员好！
最近我们尝试用rest的correlation analysis做量表与reho全脑的相关分析，想看下哪个脑区和量表相关比较显著。然后因为spm中的multiple regression也可以做全脑与量表算相关，又用spm算了下。 我们算的时候将年龄、性别等作为了协变量。
1、可是当我们做完发现，rest的结果和spm的结果基本上不一致，区域差别很明显。就是说基本上没有重叠的脑区，而且存在某个重叠的脑区在rest里是正相关、spm中是负相关。我们研究了好久，还是没有找出原因。只知道rest是用partialcorr做的去协变量。spm是用regress去的协变量。其实partialcorr里面也是用到了回归。我们就是想问下，为什么两个软件做的都是同一件事情可是得到的结果为什么差异这么明显呢？那么哪个结果做出来的比较真实客观呢？

Forums: 
Resting-state fMRI topics

关于alphasim的一些问题

Submitted by liufeng on Fri, 10/14/2011 - 15:18

不好意思，网速终于快一点了，我还是在这里提问下吧。谢谢管理员的解答。
今天研究了下alphasim，发现有些地方不是太懂。以下是我用全脑mask跑的alphasim。
Mask filename = BrainMask_05_61x73x61
Voxels in mask = 70831
Gaussian filter width (FWHM, in mm) = 8.000
Cluster connection radius: rmm = 5.00
Individual voxel threshold probability = 0.001
Number of Monte Carlo simulations = 1000
Output filename = AlphaSimtext0.0018

Forums: 
Resting-state fMRI topics