Hi Francesca,
No updates yet on this topic, but we'll be actively working on SEEG group analysis tools in the near future.
We're planning on starting a new tutorial dedicated to this topic, this will help us design and document new tools. For the dataset to be used, we have two public datasets as possible candidates:
If you have other suggestions, please let us now (the dataset must be easily accessible for Brainstorm users, include MRI+CT+SEEG+contact positions, and include cognitive tasks).
The first step of preparation was a change of the Clusters feature (see this post: Issues with using the Cluster function to generate GFP). Clusters are now saved in the datasets, and will be used to for creating groups of contacts by ROI (e.g. your V1 example), allowing to gather easily information for all the contacts in a given subject, or across subjects: contact positions, but also time series.
I'll keep you posted when I get to the group visualization of sensors.
In the meantime, please posting all your suggestions (including examples of figures that you liked from published articles)
Cheers
Francois