In my experiment I have two images: one displayed to the left (-0.4) and one to the right (0.4) of the screen.
I want them to have the same OR different orientation (45,90,135 degrees ect) in a randomized way.
I have an excel file with multiple columns. In the 1 I’ve specified the name of the left stimuli.png, in the 2 I’ve specified the name of the right stimuli.png and then I have other two columns (one for the left and one for the right image) that specify the rotation degree. In the “layout” properties I’ve set the orientation on “set every repeat” but the stimuli have randomized orientation between trials BUT always the same orientation between them within each trial.
Then, set the orientation of the left image to orientation_array[0] and the right image to orientation_array[1]. Set it to every repeat as you already did.