Hi all. I've long wanted an EEG. For those who don't know, an EEG measures tiny voltages across the brain frequency range to map electrical activity in parts of the brain. We can use it to see beta, alpha, gamma, theta, delta, epsilon, etc brain wave activity in the different areas that we can monitor. Unfortunately, a professional one, even second hand, is too expensive.

I am building an OpenEEG device openeeg.sourceforge.net/doc/ and I've gone for the maximum configuration/complexity with 6 channels. 6 channels means that we can measure voltage differences across 6 different areas.

I have three purposes for it;

1. Use it for neurofeedback training - i.e. practice with it to achieve the desired isolated activity/synchronous activity in/across different brain areas.

2. Look at meditation sessions, regular sleep, DILDs and WILDs. I have a good idea of what I expect to see here, but would be very interested to look at any interesting anomalys.

3. Test Thomas Yuschak's explainations and research on LD supplements, and tie the different supplements into modified brainwave activity.

I have already set up a push button USB interface so that I can have my finger over a small touch sensitive button during any practice sessions. All I need do is apply the slightest bit more pressure over it, and it will log the timestamp. This will not interrupt meditation sessions or WILD. I plan to apply small pressure each time I 'switch out' another step through the relaxation/WILD process, and then tie up my markers with the brainwave activity.

If anyone is interested in any progress I make on this or has any other suggestions for uses or research in this area, please let me know and I will update the thread