笔记 4 JM's FSL for task fMRI

Contents

p2 QA #1_ Check your newly created NIfTI files

p3 Brain extraction & QA

p14 Run your level 2 analyses (when you have 3 levels)

 p16 group analysis

p17 group analysis QA


p2 QA #1_ Check your newly created NIfTI files

1. 被试数据的层级结构

subjects(?)/subXXX/

  /BOLD/

    /QA

    /taskXXX_runXXX/bold.nii.gz

  /anatomy

  /behav

  /model/modelXXX/onsets/taskXXX_runXXX/conXXX.txt (change according to personal preference)

 

 (https://www.bilibili.com/video/av61429264?p=2,04:40, 08:02, 08:55)

 

2. 同上图,一个run里用不同的txt文件来设置不同条件/刺激/对比(contrasts)

 

3. 开始处理前需检查的几点

https://www.bilibili.com/video/av61429264?p=2,18:12)

 

  *[0-9] to list all numbers @ this position. i.e., ls cond00[0-9].txt to list  cond001.txt cond002.txt cond003.txt ... cond009.txt, if any of them exist.

  **dim4 listed with fslinfo represents # of volumes

  ***fslview T1.nii.gz works well to show orientation labels (exactly resemble the following pic)

 (https://www.bilibili.com/video/av61429264?p=2, 16:01)


 p3 

1. 对结构像去掉亮部,尤其是眼球和头盖骨(skull)

 

2. (https://www.bilibili.com/video/av61429264?p=3, 5:14)

 

 -R??

-g !! seems good to use

 

3. freesurfer 剥脑壳更好(12:00)

 


p14 level 2 analysis

1. 分fsf对每个被试的三个run做平均(为什么不把所有被试放进一个fsf,有什么差别?)

2.  10:48 对paired的一种设置方式

 


 p16 group analysis

1.  do flame1 only at this level and do thresholding like this

 


 p17 group analysis QA

1. thresh_zstat1.nii.gz是经过多重比较校正的文件,stat文件夹里的zstat是未经过校正的(fsleyes时最小值填2)

 

 

 2. flip through func_filtered_data to check for dependent variable

 

 

 


 

tbc

posted @ 2019-12-04 21:01  yusani  阅读(370)  评论(0)    收藏  举报