PowerPoint Presentation - Group Analysis with AFNI

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• STEP 6: Resample the mean IRF datasets for each subject to the same grid as their Talairached anatomical datasets with adwarp

•

GFor statistical comparisons made across subjects, all datasets -- including functional overlays -- should be standardized (e.g., Talairach format) to control for variability in brain shape and size

foreach cond (TM HM TP HP)

adwarp -apar EDspgr+tlrc \

-dpar ED_{$cond}_irf_mean+orig \

end

GThe output of adwarp will be four Talairach transformed IRF datasets.

ED_TM_irf_mean+tlrc ED_HM_irf_mean+tlrc

ED_TP_irf_mean+tlrc ED_HP_irf_mean+tlrc

•We are now done with Part 1-- Process Individual Subjects’ Data -- for Subject ED

GGo back and follow the same steps for Subjects EE and EF

•We can now move on to Part 2 -- RUN GROUP ANALYSIS (ANOVA)