Comparing to zero

Tom Holroyd tomh at KURAGE.NIMH.NIH.GOV
Thu Jun 23 16:22:57 CEST 2005

Tom Holroyd wrote:
>> What would be the best way to find clusters that are significally
>> different from zero?
> One way is to to a group analysis using AFNI.  I'm using that for
> coherences---here's a snippet.

Just a brief followup.  You can also do a within-subject analysis using AFNI by
writing out each trial as a separate subbrik and doing a repeated-measures
3dANOVA or 3dttest.  Then you don't need to be in Talairach space.

Dr. Tom Holroyd
"A man of genius makes no mistakes. His errors are volitional and
are the portals of discovery." -- James Joyce

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