processing-scripts
processing-scripts > Fisher Transformation
Jun 8, 2011 01:06 PM | Ali Bayram
Fisher Transformation
Dear Experts,
In the 6_singlesubjectRSFC.sh file,
****
## 3. Z-transform correlations
echo Z-transforming correlations for seed ${seed_name}
3dcalc -a ${RSFC_dir}/${seed_name}_corr.nii.gz -expr 'log((a+1)/(a-1))/2' -prefix ${RSFC_dir}/${seed_name}_Z.nii.gz
****
This step applies Fisher Transformation, and if I'm not wrong the definition of this transformation is log((1+a)/(1-a))/2, why (a-1) used instead?
Thank you very much.
Regards,
Ali Bayram
In the 6_singlesubjectRSFC.sh file,
****
## 3. Z-transform correlations
echo Z-transforming correlations for seed ${seed_name}
3dcalc -a ${RSFC_dir}/${seed_name}_corr.nii.gz -expr 'log((a+1)/(a-1))/2' -prefix ${RSFC_dir}/${seed_name}_Z.nii.gz
****
This step applies Fisher Transformation, and if I'm not wrong the definition of this transformation is log((1+a)/(1-a))/2, why (a-1) used instead?
Thank you very much.
Regards,
Ali Bayram
Threaded View
| Title | Author | Date |
|---|---|---|
| Ali Bayram | Jun 8, 2011 | |
| Xi-Nian Zuo | Jun 8, 2011 | |
| Ali Bayram | Jun 9, 2011 | |
