 The test that we would do based on the fact that you're like, hey, we're looking at your subjective experience. It looks like there might not be any micronutrient issues. We can kind of rule some of the other things out, the mitigating things that would make you not a good candidate. And we say, yeah, it looks like you're a good candidate for neurofeedback. So the next step is a map. So that's when you come in for your map. We're mapping the brain with an electroencephalogram, an EEG. It takes readings from the brain. It's super slick technology. In fact, it's the gold standard, been around for like 60-ish years.