Very interesting. You may also want to look into Bitalino http://www.bitalino.com http://www.bitalino.com it's an Arduino like approach to playing/hacking with

Very interesting. You may also want to look into Bitalino http://www.bitalino.com http://www.bitalino.com it's an Arduino like approach to playing/hacking with biomedical signals, at a fraction of the cost this kind equipments usually has.