Basic Question About a Design

[Guest guest]

I have a couple of questions about one of the BrainBay designs called "two-channel assessment," shown below: In the module at the right side of the design, labelled "(A*A/B*," the theta and beta outputs are multiplied times themselves, before being counted in the theta-beta ratio counter. Why is this? If we are wanting to see only a ratio of the theta to beta waves, then squaring each would only give you the same ratio, so what's the point of this seemingly-extra step? Second question: Is the "Averager" which follows truly an averaging module, or has it been so-labeled because it simply samples the incoming data every 256 (if set to that number, for example) times? I realize that most people in this forum don't use BrainBay, but since the first question, at least, is one about very basic procedure, I would imagine that it's not a problem. The second question is not one that is answerable, without a familiarity with BrainBay, however. In an attempt to find an answer, I have posted this on the OpenEEG forum, as well, casting my net widely, as it were. The folks on that website are also helpful and great, but normally remain mute to such questions as these, being oriented more toward the engineering and computer programming aspects of EEG, so I'm not holding out much hope for an answer, there.