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Dan
February 27, 2019 03:22AM
Hi, peter

1) What's different between your acquisition and that of your colleague?
My colleague's experiment was watching movies and my experiment was purely auditory. We all use a few minutes of natural stimulation, our data analysis methods are the same (do correlation). We were surprised by the bright ventricles, which my colleague's experiment did not show.

2) Have you checked the alignment of your data to the anatomical?
I'm sure we've checked and found no problem. We also tried the nonlinear alignment you recommended, and the ventricles are still bright. We did several versions of proc script, but the results were the same, including in original space, add giant_move ..
-align_opts_aea -cost lpc+ZZ -giant_move
-regress_censor_motion 0.2
-regress_censor_outliers 0.1
But censor in my experiment is not very appropriate, because I do voxel-by-voxel correlation based on task, the TR value is 0 which was censored out.

3) Does your data have the slice timing built in correctly? Can you post the output log?
I didn't do this before...But I did it today, and it didn't change. (The slice timing file is attached)


Thanks a lot,

Dan


Subject Author Posted

HELP! problem with bright ventricle after 3dTcorrelate Attachments

Dan February 27, 2019 08:43AM

Re: HELP! problem with bright ventricle after 3dTcorrelate

ptaylor February 27, 2019 09:00AM

Re: HELP! problem with bright ventricle after 3dTcorrelate

rick reynolds February 27, 2019 09:41AM

Re: HELP! problem with bright ventricle after 3dTcorrelate

ptaylor February 27, 2019 10:16AM

Re: HELP! problem with bright ventricle after 3dTcorrelate

Daniel Glen February 27, 2019 10:56AM

problem with bright ventricle after 3dTcorrelate Attachments

Dan February 26, 2019 08:24AM

Re: problem with bright ventricle after 3dTcorrelate

Peter Molfese February 26, 2019 09:57AM

Re: problem with bright ventricle after 3dTcorrelate Attachments

Dan February 27, 2019 03:22AM

Re: problem with bright ventricle after 3dTcorrelate

Peter Molfese February 27, 2019 09:39AM

Re: problem with bright ventricle after 3dTcorrelate Attachments

Dan March 04, 2019 08:57AM

Re: problem with bright ventricle after 3dTcorrelate

ptaylor March 04, 2019 09:57AM

Re: problem with bright ventricle after 3dTcorrelate Attachments

Dan March 05, 2019 03:08AM

Re: problem with bright ventricle after 3dTcorrelate

ptaylor March 05, 2019 08:01AM



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