These days there is a lot a talking about neurofeedback and there exists also all kind of clinical applications in this field. In parallel we see many discussions usually not accepted by mainstream science about low level (=subthermal) effects of amplitude modulated RF on the human body and brain in particular. A single nicely reproducible lab experiment with positive outcome could have a considerable impact there. Thus why not try ( real time)neurofeedback via some small AM modulated transmitter below 0.5 Watt (perhaps in some ISM band) near the ear.