History of AFNI updates  

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January 26, 2005 03:07PM
Hi Rick.

Thank you for your reply. I apologize for the misleading file names. The input file has NOT had the average and drift removed already. It has been motion corrected and a small spatial filter applied. There is no doubt that these datasets are a bit funky...I am trying to figure out why and if there are any salvageable data. What it looks like to me is that there is the scanning area outside the actual brain that has a higher signal than what is inside. So, when I try to use 3dClipLevel or 3dAutomask, it leaves me with this spherical outline, and no actual brain activation. That is why I wanted to try to clip above, rather than below the value determined by 3dClipLevel, to see if I could reverse the results.
Subject Author Posted

3dClipLevel and 3dcalc

Krista January 25, 2005 01:14PM

Re: 3dClipLevel and 3dcalc

rick reynolds January 25, 2005 03:08PM

Re: 3dClipLevel and 3dcalc

Krista January 26, 2005 03:07PM

Re: 3dClipLevel and 3dcalc

rick reynolds January 26, 2005 03:17PM