What company makes the best biofeedback machines?!
Question:
What company makes the best biofeedback machines?
Answers:
Suggest you look at www.thequantumalliance.com, and especially look into documents and videos if you want in-depth info on the EPFX device and software package.
All best,
Alan Kreglow
Owner, www.QuantumBiofeedback.info and www.QuantumBiofeedback.us