Fig. 4: Experimental design for task-based fMRI.
From: Ultra-high field fMRI identifies an action-observation network in the common marmoset

In each run, 9 baseline blocks (18 s long) were alternated with experimental blocks (12 s long) of four different conditions: Grasping Hand, Empty Hand, Grasping Hand Scrambled, and Empty Hand Scrambled. Each run lasted 258 s globally.