The QRI Matrix uses five specific frequencies instead of just one, so there are thousands of harmonics at work to target many organisms at once, plus it works short period of time. Parasitic infections can be the reason one is not making progress for reflex integration.
We use the Matrix, along with the Harmonic laser on the sacrum and thymus with333Hz for 5 to 10 minutes, at the beginning of a session to reset the brain.
It also seems to help some with calming and sleep. I have used it numerous times for pain directly on the area. It comes with a PEMF paddle, also used for pain.