You actually have more than two events in the trial:
- Show a picture
- Brief digital out signal 1
- Brief digital out signal 2
- Show a blank text that uses a variable time limit
Note that on this last event, the variable time limit can be several seconds long.
The picture does stay on screen throughout the digital output because events of type Digital Output never erase the screen. However, right after the digital output, you have a blank text event “IET_entreCSs_variavel” which erases the screen. By default, text events do erase the screen unless you change that.
I want to caution you about something else. Your trial “CS_PLUS1” is using trial pacing of 6000 ms (in the Trial Editor’s End
tab), but the trial will always be longer than 6000 ms. This feature does not serve as a time limit. I suggest that you either turn it off or make sure that the trial does not last more than, say, 5900ms.