We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:
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The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.
3dWarp allows the -gridset option to make the output match a specified dataset. One could also use 3dresample to force the same grid in a second step.
Whether deobliquing is necessary is more a question about the complete analysis. Deobliquing is not necessary if analysis is done on a standardized talairach type space, and anatomical and functional data are equally oblique and overlay well with each other.