Hi,
in order to analyze the ERPs statistically, I need to detect peaks within the ERPs for every participant in certain time intervals. Afterwards I can take these values and determine if the ERP components differ between conditions. Can you please tell me, if it is possible to determine the potentials within brainstorm? (What I did until now is preprocessing and averaging to see which potentials are interesting in my data.)
Thank you,
Christina
Hi Christina,
There is nothing that detects the maximum value in an ERP in Brainstorm.
Detecting is not the issue, the question is more how to collect and process the results.
You will most likely need some custom Matlab code to to want you want with your data. You have several ways for doing this in Brainstorm:
- Just loading the file from the Matlab command line (functions: in_bst_data.m, in_bst_results.m) and process them the way you want
- Use the process “Pre-process > Run Matlab command”: you can add any piece of Matlab code in there, including something that will call you own scripts or save new files.
- Write your own plugin function, more complicated at the beginning but much more powerful if you are planning to use it a lot:
http://neuroimage.usc.edu/brainstorm/Tutorials/TutUserProcess
Cheers,
Francois
A new process was added to detect peaks in ERP:
Extract > Find maximum in time