FIF files - event markers

Discussions
1

Greetings!

I have some questions with regard to event markers for imported FIF files. The import procedure works fine, but all the information about event markers is stored on separate channels (stim; see the screenshot) and these triggers did not display as event markers on the other channels.

import1
import1509×588 49.4 KB

event_markers
event_markers1880×825 86.1 KB

I would like to see them as a conventional color dots in the main data file. How could I extract this information from stim channel to project it to other channels?

Thank you a lot.

Kind regards,
Oksana.

2

Hi Oksana!

I suggest you have a look at our Stimulation delays tutorial, specifically the sections about Event Detection: https://neuroimage.usc.edu/brainstorm/Tutorials/StimDelays#Detection_of_the_button_responses
Let us know if that works for you.

Cheers,
Martin

3

Hello Martin,

Yes, it worked, thank you a lot!

Kind regards,
Oksana.

4

For FIF files, you should get an additional option for reading the stim channels directly.
See these two tutorials dedicated to Elekta recordings:
https://neuroimage.usc.edu/brainstorm/Tutorials/TutMindNeuromag#Link_the_recordings
https://neuroimage.usc.edu/brainstorm/Tutorials/VisualSingle#Read_stimulus_triggers

1 Like
5

Thank you a lot!