At 11:06 PM 9/10/98 -0400, you wrote:
| Interestingly, using proportional scaling for normalization (but without
| any scaling of the grand mean) gives me exactly the same values. So Global
| Normalization="None" and Global Normalization="Proportional Scaling" look
| like they are doing the same thing. How can that be?
Proportional scaling scales each image to have the specified global mean.
Since this isn't a particularly interesting global value to look at, SPM
prints out the unscaled globals, as it does when no proportional scaling or
grand mean scaling is selected.
-andrew
+- Dr Andrew Holmes [log in to unmask]
| ___ __ __ Wellcome Department of Cognitive Neurology |
| ( _)( )( ) Functional Imaging Laboratory, Stats & |
| ) _) )( )(__ 12 Queen Square, Systems |
| (_) (__)(____) London. WC1N 3BG. England, UK |
+------------------------------------- http://www.fil.ion.ucl.ac.uk/ -+
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