Difference between revisions of "Lab Manual:AFNI"

Revision as of 12:32, 9 July 2008

3dRegAna is an AFNI program which can be used to do multiple linear analysis

The -model tag can be used to specifiy and test regression model

 -model 1 : 0

will test Yi = B0 + B1X1i+ei vs. Yi = B0 + ei

 -model 2 : 0

will test Yi = B0 + B2X2i+ei vs. Yi = B0 + ei

 -model 2 : 1 0

will test Yi = B0 + B1X1i + B2X2i+ei vs. Yi = B0+ B1X1i + ei

 -model 2 1 : 0

will test Yi = B0 + B1X1i + B2X2i+ei vs. Yi = B0+ei

@@ Line 1: / Line 1: @@
-==polort rule of thumb==
-AFNI folks suggest that for every 150 seconds you should add a degree to the polynomial.
-For a 150 second long scan, you would use -polort 1, for a 300 second scan, you would use -polort 2, and so forth.
 ==3dRegAna==