Covariates removed during preprocessing

Submitted by leo.tozzi on Fri, 07/31/2020 - 05:17

Dear Experts,

In the resting state data information, the following is reported:

C - Covariates Removed (without global signal regression)
globalC - Covariates Removed (with global signal regression)

I was wondering exactly which covariates have been removed. Is this just motion parameters or also phisiological noise?
Thank you,

 

Leonardo Tozzi

Forums:

puyunfashi

Mon, 08/03/2020 - 06:25

Hi Leonardo:

You may check the .mat files in {working directory}/FunImgARCovs.

leo.tozzi

Tue, 08/04/2020 - 22:39

For some reason, I cannot find this file, where is it relation to the folder containing the data (ROISignals_FunImgARCWF)?

Thank you,

 

Leonardo Tozzi

YAN Chao-Gan

Fri, 08/28/2020 - 03:58

You may run DPARSFA on the demo data to have a full comprehension on the covariates.

leo.tozzi

Fri, 09/11/2020 - 17:12

Thank you very much!

Then is it correct to assume that the removed covariates are the default as in your Frontiers 2010 paper: https://www.frontiersin.org/articles/10.3389/fnsys.2010.00013/full

There you say:

"six motion parameters, the cerebrospinal fluid (CSF), and the white matter signals would also be removed as nuisance variables to reduce the effects of head motion and non-neuronal BOLD fluctuations"

 

 

YAN Chao-Gan

Mon, 03/22/2021 - 09:20

No. Now is Firston 24 head motion parameter model. You can see Yan, C.G., Chen, X., Li, L., Castellanos, F.X., Bai, T.J., Bo, Q.J., Cao, J., Chen, G.M., Chen, N.X., Chen, W., Cheng, C., Cheng, Y.Q., Cui, X.L., Duan, J., Fang, Y.R., Gong, Q.Y., Guo, W.B., Hou, Z.H., Hu, L., Kuang, L., Li, F., Li, K.M., Li, T., Liu, Y.S., Liu, Z.N., Long, Y.C., Luo, Q.H., Meng, H.Q., Peng, D.H., Qiu, H.T., Qiu, J., Shen, Y.D., Shi, Y.S., Wang, C.Y., Wang, F., Wang, K., Wang, L., Wang, X., Wang, Y., Wu, X.P., Wu, X.R., Xie, C.M., Xie, G.R., Xie, H.Y., Xie, P., Xu, X.F., Yang, H., Yang, J., Yao, J.S., Yao, S.Q., Yin, Y.Y., Yuan, Y.G., Zhang, A.X., Zhang, H., Zhang, K.R., Zhang, L., Zhang, Z.J., Zhou, R.B., Zhou, Y.T., Zhu, J.J., Zou, C.J., Si, T.M., Zuo, X.N., Zhao, J.P., Zang, Y.F. (2019). Reduced default mode network functional connectivity in patients with recurrent major depressive disorder. Proc Natl Acad Sci U S A, 116(18), 9078-9083, doi:10.1073/pnas.1900390116.