I’m very new with PsychoPy and planning to do a project for my Neuroprofiling internship 
In the big picture, the goal is to create an automatic time marker between stimulus presentation and EEG data acquisition software.
I’m doing an experiment by the builder with this scenario:
playing several pre-recorded questions,
and the subject is going to answer the questions,
then the subject will press ‘ space ’ when the answer is finished.
Luckily, the scenario has been set up quite well.
However, I need to create 3 time-marker…
when the question is started,
when the question is finished, and
when the space bar is pressed.
and here are the issues that I’m confused
1. how can I extract these 3 points of time-marker?
I found out the result of the data doesn’t have the time when the sound is finished.
and I am not sure in what unit this data is? is it in second or frame number? and I am concern about when is the “time=0” in this case? is it started from the routine or from the first time when the program is running?
2. If I used another software for EEG data acquisition (e.g emotivPRO or BCI2000), I hope to synchronize these time-markers to the recorded EEG signal. Since it is separated software, I’m concerned whether the time-marker is having the same exact
"time=0" or I better extract the real-time data (like the exact time when the stimulus are presented) as the marker?
I’ve read several issues and post replies in order to find some solutions.
Since I need to finish this as soon as possible, I heartily hope I can get further learning from this public forum.
Thanks a lot
Look forward to hearing from any of the helping hands in the forum.
Best regards,
Syifa
p.s.
Win10 and PsychoPy3 2020.1.3
loopQuestion1.xlsx is the excel file I use for the looping
stimulusPresentation.psyexp is the experiment file
some screen captures and uploaded file
experiment
loopQuestion1
result of the data
loopQuestion1.xlsx (15.3 KB) stimulusPresentation.psyexp (19.2 KB)