An analysis scheme employing ARMA was proposed by Locascio et al. in a
paper in HBM a few years back.
>Dear SPMers:
>
>I know that autoregressive-moving-average (ARMA) modeling has been used
>in SPM as a preprocessing step, to adjust fMR data for motion effects.
>Does anyone incorporate an AR model into the general linear model during
>the regression stage, i.e., enter lagged versions of the fMR time series
>into the design matrix? This seems like an obvious thing to do, not so
>much as a motion correction but as a better model for the data in
>general. I haven't seen any discussion of this, and I'm a bit
>curious... Thank you.
>
>--
>Aaron S. Field, M.D., Ph.D.
>Department of Radiology
>Wake Forest University School of Medicine
>[log in to unmask]
Brad Postle, Ph.D. tel. 215-614-1976
Department of Neurology fax. 215-349-8464
University of Pennsylvania
Medical Center [log in to unmask]
3 West Gates, Area 9
3400 Spruce St. http://cortex.med.upenn.edu/~postle/
Philadelphia, PA 19104
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