What does one trial look like? Probably there is some time before the stimulus of interest (the target), where a fixation cross is shown. Maybe there is some time after the stimulus is presented.
The ITI's can be fixed or variable. Variable ITI's can be sampled from a uniform model or a truncated exponential model.
How many contrasts do you want to optimise? You can choose to include all pairwise comparisons. You can also add custom contrasts (to be specified on the next page). You can do both.
Do you want to include rest blocks? If not: leave these boxes empty.
There are 4 criteria that quantify the optimality of the design:
Please provide the weights that you want to give to each of the design criteria.
Ideally, the weights sum to 1. If not, they will be rescaled as such.
To prevent predictability of the design, you can control the contingencies in the design. Eg.
To which order do you wish to control the contingencies (maximum 10)? In other words: how far back do you want to control the predictability?
To prevent predictability of the design, you can control the number of times a stimulus type is repeated.