Dear all,
in the SPM8 manual (p. 28) it is suggested that movement parameters are
(also) squared before being entered in the 1st level model.
This topic is touched in two old posts (1998:
https://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind98&L=SPM&P=R1357, 1999:
https://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind99&L=SPM&P=R62359).
Is there a principled recommendation on this, beyond the try-and-decide
approach?
Thank you,
Bruno
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