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ALFF Error

Hi,

I get the following error message running the ALFF computation in DPARSF:
_________________________

Computing ALFF...
     Read 3D EPI functional images: "/SCR2/REST/FunImgCWS/WY1K".

     Load mask "".
     Performing FFT .............

rest做t检验是z值还是t值

各位老师:
      我在用GIFT软件时,已经把数据转化成z值了,然后我再用rest分别做单样本t检验和双样本t检验,我想问这个时候report报出来的结果应该是t值还是z值呢?谢谢

Alphasim cluster size & uncorrected in spm

 First thanks you for your great work!! 

I performed a multiple regression analysis in SPM8 with a behavioral score as vector for a resting state task. 
Then I performed the Alphasim test with T treshold at 0.005 rmm at 3 (for 3x3x3) and here is my doubt. 

percentage signal change

Dear DPARSF users,

I was wondering if DPARSF is converting the fmri signals from arbitary scanner uints into percentage signal change during the processing step.
I will appreciate it if you can let me know.
Thanks in advance !!

YY

rest error

Dear experts,

I am new in REST  software and i want to apply one sample and two sample t-tests on obtained ALFF maps. 

When I apply t-test from statistical analysis section, Matlab meets error (' rest_Fix_Read_Write_Error'). I applied every instructions that were mentioned in this forum before but it makes no difference.

6 motion regressors output

 Dear experts,

I am running only motion regression in DPARSFA and looking at the output it appears that the image is demeaned. Does it not output the functional image with the mean added back in order to use it for further processing?

Thank you
Helen

VBM DPARSF

严老师,您好,请问:

在做VBM的modulation时候我们经常这样选择:
单击Modulated normalized选择“affine+non-linear only”。这里的affine+non-linear only是什么意义,是说T1像经过affine和non-linear两次normalization,然后得到一幅MNI的图像?
在DPARSFA的VBM里面是如何选择normalization和modulation过程的。

谢谢!

计算差异的差异

老师好:
      我有一个统计的问题。我有两大组,每组内有两组数据,我分别用two sample t-test计算了这两组数据的差异。现在我想计算这两组数据的差异之间的差异,应该用什么方法呢? 还是我一开始统计就应该用其他方法? 请老师指教!谢谢!

请教:如何得到MNI space 中的T1 MRI

 各位老师,同学好,
请教一下,用DPARSFA处理fMRI时我使用了T1项做coregistration,然后做normalization,但我没找到normalize 到 MNI space之后的T1 MRI. 
是不是说,用做完coregistration 之后的 T1 计算如何normalize fmri 到 MNI space后仅仅把参数用在fMRI上,并没有保存 MNI space中的的T1 ? 有没什么方法可以得到它呢?
另外在PicturesForChkNormalization 中有些subject 有些灰质和颅骨都重合了,如下图横断面,这样的subject是不是就不可以用了?或者是不是哪里的参数设置不合适,如何改进它呢?
非常感谢!

请教一个问题,关于DPARSFA处理后的统计数据的选择。

请教各位老师一个问题:
    我用DPARSFA处理数据,选择里面的“Calculate in MNI Space(warp by DARTEL)”处理流程,先跑完ALFF,再做Filter。这样的话最后的统计分析应该是选生成的“Results”文件夹里的数据,还是要选择“FunImgARCWSF”里的数据?
    还有就是,我看了一下数据处理时Matlab里面的代码,Filter时是对FunImgARCWS文件夹里面的数据进行滤波,而不是对Results\ALFF里面的数据进行滤波。这样的话,即是说Results\ALFF里面的数据是没有滤波过的?

附上代码:

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