Publication details
Effects of spatial smoothing on fMRI group inferences
| Authors | |
|---|---|
| Year of publication | 2008 |
| Type | Article in Periodical |
| Magazine / Source | Magnetic Resoannce Imaging |
| MU Faculty or unit | |
| Citation | |
| Field | Neurology, neurosurgery, neurosciences |
| Keywords | fMRI; Spatial smoothing; Group inferences; SPM |
| Description | This study presents a broad perspective on the influence of spatial smoothing on fMRI group activation results. The optimal filter size for group analysis is discussed according to various criteria. For our experiment, the optimal FWHM is about 8 mm. We can conclude that for robust experiments and an adequate number of subjects in the study, the optimal FWHM for single-subject inference is similar to that for group inference. For less robust experiments and fewer subjects in the study, a higher FWHM would be optimal for group inference than for single-subject inferences. |
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