Dear spm group,
I've been asked to analyze a data set that was scanned with the same parameters
as the paper: Fox et al "The human brain is intrisically organized into
dynamic, anticorrelated functional networks", PNAS July5,2005
This data set was not analyzed using SPM but seems to correlate time series data
for the voxels or regions of interest during a resting state.
My dilemma is:
1) I don't quite understand how to set my design matrix since there is no
baseline condition to subtract the task from. What I do have is, one task (eyes
closed)that continues throughout the entire 110 volumes acquired.
2) I'm also not sure if this translates to a PPI analysis in SPM or if it's
something I won't be able to replicate using SPM.
Any comments would be greatly appreciated,
Thanks for your attention and time,
Maria
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M. Densmore, Image Analyst
Lawson Research Institute
St. Joseph's Health Centre
268 Grosvenor Street
London, Ont. N6A 4V2
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office: (519) 646 6100 ext 64864
fax: (519) 646 6399
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