Generating simulated cortical activity

Discussions
1

Hi,
I am new with Brainstorm, currently studying the tutorials; but I would like to know if it is possible to do something like this:

generate two different simulated cortical activities (in [I]all[/I] the cortex) - as an example, the former to “simulate” a resting state /baseline and the latter to “simulate” a task (e.g. the baseline itself with a greater activity in a specific area), in order to apply forward/inverse problem and contrast the two conditions, showing the task’s specific area.

And, also, if it is possible to generate [I]cerebral[/I] activities, aka without limiting the problem to the cortex.

Then, I will study [I]how[/I] to do these simulated activities :slight_smile: (probably, starting from real data?)

Thank you,
Stefano

2

Hi Stefano,

Yes, you can define some source activity, associate it with an area of the cortex, and use this to simulate EEG or MEG recordings.
You can do it using a volume source model, but it will be a bit more complicated.

You can find examples further in the introduction tutorials:
http://neuroimage.usc.edu/brainstorm/Tutorials/TimeFrequency#Simulation
http://neuroimage.usc.edu/brainstorm/Tutorials/Statistics#Convert_statistic_results_to_regular_files
http://neuroimage.usc.edu/brainstorm/Tutorials/SourceEstimation#Model_evaluation

And discussions on the forum:
http://neuroimage.usc.edu/forums/showthread.php?2420-Questions-about-eeg-simulation

Francois