Octave is a "free software"/programming language where you can use some Matlab scripts to visualize and analize data, also i think is posible to run EEGLAB in Octave.

https://sccn.ucsd.edu/wiki/Running_EEGLAB_on_Octave

Hope that helps.

Johannes Pfeifer,

well the thing with currently available free visualization software is that they're not suited for real-time interaction of brain imaging data, especially data involving thousands of points. Thankfully, this is starting to change.

You can check MNE-Python and MNE-Realtime if you're interested. There's also a relatively new piece of software called visbrain that looks rather promising.

Dear Johannes Pfeifer,

Free software related to qualitative EEG / brain mapping.

I hope the information will help you.

With Best Wishes,

Samir G. Pandya

Dear all,

thank you very much!! I'll set up an explorative little pretest, check which software suits good for me and i'll report here. Thank you very much again.

Greetings

Johannes

thank you!