Jamil,
if you want to do something a little more interesting than just
correlate 2 time-series (which is really not that informative), try
the Psychophysiological Interaction (PPI) option in SPM, which allows
to assess context-specific co-variation between different regions
(varying with task conditions). You'll find some info in the help
menu and on the website, plus there's a good practical walk-through by
Will Penny at(http://www.fil.ion.ucl.ac.uk/~wpenny/datasets/attention/README_GLM_PPI.txt).
good luck,
Tobias.
On 2/26/06, Jamil Zaki <[log in to unmask]> wrote:
> Hi All --
>
> I've seen different groups conducting connectivity analyses by extracting
> time course data from particular regions and using these as "seeds" to
> assess covariance between extracted time series and other regions. Is there
> a methodology for doing this type of analysis in SPM?
>
> Thanks for all your help and best regards,
>
> Jamil Zaki
>
--
Tobias Egner, PhD
fMRI Research Center
Columbia University
Neurological Institute, Box 108
710 West 168th Street
New York, NY 10032
Tel: (+1) 212 342 0121
Fax: (+1) 212 342 0855
Email: [log in to unmask]
|