[FBX@D0$(Z`4$EOHDMHCZSV] The running sequence of “D1” “D2” is fixed.I want to know how can I run "D2“ first in a half of all trails. I need some codes or other things?

No need for coding. If “trials_2” loop is randomized you can insert additional routines to have this sequence: DI1 - Mask2 - DI2 - DI2 - Mask2 - DI1 then place two loops inside “trials_2”, one from DI1 to DI2 and one from DI2 to DI1, set the loop as sequential and the number of repetition as varia…

Routine sequence

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wakecarter September 28, 2021, 8:17pm 10

That sounds like you need independent randomisation.

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Routine sequence

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