Temporal Dynamic Analysis

Dear DPABI community,

I have some questions regarding temporal dynamic analysis. I have two groups of subjects, AD patients and healthy controls. I want to compare the patterns of dynamic r-fMRI indices and and their concordance.

  •  For group analysis of dynamic r-fMRI indices, do I use the CV maps? Do they have to be z-scored and smoothed?
  • Do I have to z-score the concordance maps for group analysis?
  • Is it possible to calculate the static concordance across subjects as describend in Yan et. al 2017? As I understand so far, DPABI outputs the temporal functional concordance within subjects.

Thank you and best wishes!

Julian

Forums:

Hi Julian,

1. Some people use CV maps, but some others use STD maps. Usually they should be z-scored and smoothed.

2. Yes.

3. Yes, you can. However, you need to call the script y_KendallW_Image.m (for voxel-wise) or y_KendallW_AcrossImages.m (for volume-wise).

Best,

Chao-Gan