Trigger in OpenSesame firing too early
I am currently programming an eeg-study using OpenSesame. In the study, I am showing my subjects a sequence of words per trial. Each word has a fixed amout of time it is being shown, before the next word of the sequence is presented. Now between specific words in the same position in each trial I want to send a trigger (let's say for instance in the third word of each trial). This happens for multiple words in the sequence. In my logfile the time between two fired triggers does not sum up to the time the words between the triggers are supposed to be shown. So if I fire Trigger A, then show Word 1 for 400ms, then Trigger B and then Word 2 for 400ms. But the time between trigger A and B in my logfile is just 251ms (not always this value, it varies). Does someone know how to solve this problem?
Thanks in advance! :)