[Arman]

I have modified your experiment to raise and lower a unique line for onsets and offsets of the first ITI and Picture events. I have also set a pulse upon the onset of the first Startle event.

I cannot tell why you were having difficulties because the experiment you sent me had no digital output events; therefore, I could not see your past efforts.

For future reference, please click File > Create an Experiment Package... so that your picture and audio files are included with your experiment. To run the experiment, I had to change all of your picture and audio events to text; that being said, I also tested the solution with actual picture and audio files.