• Shell script to perform correlational tractography (connectometry analysis) in DSI Studio

• DSI Studio allows manual performance of correlational tractography, but for large numbers of study variables, a shell script is handy.

--action=cnt: to perform connectometry

--source=PDAM0.md.db.fib.gz: select the name file of the connectometry database

--demo=PDAM_DemografGeral.csv: select the tabular data (study variables)

--variable_list=1,2,4,5,%%G: variables 1,2,4,5 are adjusted with multiple linear regression

--t_threshold=3: t-score threshold reflects the statistical strength between the associations (2,5 is default)

--length_threshold=20: minimum length of the tracks, in voxel distance

–-exclude_cb=1: exclude cerebellum (true)

--permutation=4000: set number of random permutations to study variable (to calculate FDR)

--voi=%%G: study variable of interest (in this case columns 6 to 19)

> log%%G.txt: creates log file for each study variable

Reference: DSI Studio documentation and Forum https://dsi-studio.labsolver.org/