Hi everybody,
I have a question about optseq2.
In order to calculate ntp, I need to know the total time that my run lasts. Thus, I do not know whether I have to include in the total trial time the fixation cross time (500 ms) + event (1000 ms) + variable ISI average (1 s, ranging from 500 to 4000 ms), or not to include the variable ISI, increasing the total run time by 50% at the end.
On the other hand, I have the same dilema about the event command (ev) and the duration of the stimulus that I should set. Also, if I use the fixation cross plus event duration, they would add together 1.5 ms, while the tr is 2. According to the program's instructions, the stimulus duration must be a multiple of tr. Then, I guess that I should use to calculate the whole thing the fixation cross (500 ms) + the event (1000) + the variable ISI average (1 s). Am I right?
Thank you very much and kind regards,
C