To achieve this effect, you will need to put all of your fixation points and images on a single line of your .csv input file. Whenever you have more than one row of stimuli in a .csv input file, DirectRT must show a blank screen because it needs time to compile all of the stimuli for the upcoming trial (see here in the DirectRT manual for more information: http://www.empirisoft.com/directrt/h...l_interval.htm.
I've attached an example .csv file that should do what you want. Let me know if you have any other questions.
To achieve this effect, you will need to put all of your fixation points and images on a single line of your .csv input file. Whenever you have more than one row of stimuli in a .csv input file, DirectRT must show a blank screen because it needs time to compile all of the stimuli for the upcoming trial (see here in the DirectRT manual for more information: http://www.empirisoft.com/directrt/h...l_interval.htm.
I've attached an example .csv file that should do what you want. Let me know if you have any other questions.