 yeah so it's looking for blood flow and oxygen so now what you see is a ball that goes up and down with the amount of oxygen in your brain and then you see stars like that up here when that's how when you focused for continuous seconds in a row it kind of goes down again yeah it went away and so how would someone use this at home i'm trying to picture all sorts of ways what they recommend this particular company is that if you want to improve your focus over time maybe you're wanting to manage something like adhd