各位老师和同学：
我对扫描参数一直了解不多，最近在写论文时有一些困惑，问题如下：
1. REST的旋转角记录的是标准角，请问标准角是指多少度呢？
2. T1的旋转角记录的是矢状位，这个又是多少度呢？
3. 我们数据的TR是2530（在北师大采的数据），但我看很多研究里面T1的TR是7-8ms，而另一部分则是1000-3000ms，为什么差别这么大呢？
提前感谢！
Dear Experts
Hi
How could I extract peak voxel time series?
Many thanks in advance.
Best,
mahsa
Dear Experts
Hi
I have identified DMN using ICA algorithm and I would like to examin effective connectivity using GCA.
As far as I know unlike functional connectivity,effective connectivity is presented as a set of nodes (regions) and edges. How should I specify nodes and edges?How could I obtain path coefficients?
Many thanks in advance.
Cluster 7 Number of voxels: 287 Peak MNI coordinate: -3 -24 51 Peak MNI coordinate region: // Left Cerebrum // Frontal Lobe // Medial Frontal Gyrus // Gray Matter // brodmann area 6 // Paracentral_Lobule_L (aal) Peak intensity: 4.0519 # voxels structure 287
--TOTAL # VOXELS-- 241 Frontal Lobe
155 Right Cerebrum
136 Gray Matter
127Paracentral Lobule
124 Left Cerebrum
107 Medial Frontal Gyrus
92 White Matter
81 brodmann area 6
64 Cingulum_Mid_R (aal)
57 Supp_Motor_Area_L (aal)
52 Supp_Motor_Area_R (aal)
37 Paracentral_Lobule_L (aal)
36 Cingulum_Mid_L (aal) 35 Paracentral_Lobule_R (aal)
34 brodmann area 31
33 Limbic Lobe
28 Cingulate Gyrus
17 Sub-Gyral
11 brodmann area 5 10 brodmann area 24 8 Inter-Hemispheric 5 Parietal Lobe 4 Precuneus_R (aal)
各位老师好！
老师好！请问下，matlab报的这个错误，该怎么解决。万分感谢
Hello DPARSFA researchers,
I'm working with two different subject populations - one which has 31 rfMRI slices and 240 time points and one which has 36 slices and 300 time points. There are a couple of patients who have different numbers of slices as well (e.g., 32 and 33). So far, I've run:
各位老师好：
请教：1. 用dpabi做REHO的统计学分析，在统计学计算时没有加BRAIN mask，看图做Alphasim时加Brain mask的得到的结果，与在统计学计算时加BRAIN mask，看图做Alphasim时加Brain mask的得到的结果完全不同，哪个是对的呢？
2. 同一组被试前、中、后，3个时间段比较是否应该用ANCOVA（repeated measure）分析，之后再做两两分析时一定是在ANCOVA有意义的区域才可以，对吗？
Hi all,
这次会议邀请了NIDA所长、著名成瘾研究科学家Nora Volkow, 艾滋病鸡尾酒疗法发明人何大一，研究吸烟有关的基因方面著名的学者Ming Li 教授，在成瘾治疗方面卓有成著的