send EEG Parallel Port Triggers
Hello all,
My experiment is an auto-paced reading task. The stimuli are 360 sentences. They are presented one word at a time (383 ms). Participants would give response after each sentence.
Now I want to send EEG triggers for the critical word in each sentence, but the length of sentences are different, so those critical words are in different columns. (It’s a bit tricky; I attach a screenshot of the stimuli). Must I set triggers for 360 sentences separately? How can I do this with the parallel port trigger plugin?
I am new to Opensesame, python and everything. I’m still confused about how triggers work. It would be nice if anyone could give me some readings about EEG triggers (I’ve read this post and found it helpful http://www.cogsci.nl/forum/index.php?p=/discussion/comment/5162/)
Thanks!
Midori
Comments
No idea. I usually use inline_code that is tailored to our lab system.
If you mean whether you have to write the code manually for all 360 sentences, the answer is no.
My approach would be following: If you only want to send a trigger for the critical word, you can add another variable to the table that has for each sentence the index of which is the critical word. Later in the inline_script you can check the current word index of the sentence, compare it to the index of the critical word, and if they match, send a trigger.
The exact implementation of this depends on your code however. You can accomplish it in many ways, I guess.
Good luck,
Eduard