FMRI

求助

Submitted by natalia on
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老师您好：
    我在用DPARSF处理数据（计算REHO）时出现了如上的报错，同一批被试，只有两个出现了这种报错，其他均成功跑完，请问错误的原因是什么？我该如何解决？谢谢您。

请问regressor这个词应该怎么理解

Submitted by nutrition-li on
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大家好！请问regressor这个词应该怎么理解啊？我最近在很多地方都看到这个词，请大家不吝赐教。
在SPM8的manual里第62页讲到1st level analysis的Timing parameters设置时，提到“Also, with long TRs you may want to shift the regressors so that they are aligned to a particular slice. This is e ected by changing the microtime resolution and onset.”

第63页的fig8.2也提到了这个词，图如下：

Rest img mismatch after AFNI normalization

Submitted by marvelancet on
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AFNI

Hi everybody,

I'm currently processing a series of rest fmri data which need to be manually normalized.

The procedure briefly goes like this:

 -- dparsf completed the pre-normalization steps from 'dicom->nifti' to 'realign'
 
 -- toggle spm, 'coregister: estimate', 

 -- switch AFNI，
   
   '3dWarp -deoblique' and '3drefit -markers ' to generate sturctural .HEAD/BRIK pair

关于 GCA 的问题

Submitted by lynnrain on
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   我的问题：
  1. 我是在两个激活区的T值最高点为圆心画球，绘制ROI，能否讨论一下各种ROI的利弊，请问各位在研究中一般是怎么做ROI的呢？

  2. Can anyone expert here help me?

    Submitted by apolo140 on
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    paremeters
    philips
    FMRI
    paremeters
    philips

    Hello, everyone here!
     We are planning to launch a resting brain fMRI research with Philips 3T MRI scanner, but we don't know how to set the parameters,
    can you experts here tell me how to set the related parameters in detail? Any advise will be much appreciated! Thank you!


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