Okay, so, um, so our deep sleep. Kind of looks like this. So the EG signals are up at the top here, not the very top, these are the channels, C three, C 40102 So C three, C four, and then a one or two or the back. So this is it during a normal sleep study this is about 30 seconds. And these are those big, slow waves so this is a big wave, another big wave. And if you look at this this is a total of two seconds so these are one cycle per second. And that's what the brain does a lot of during deep sleep, so it's like, it's gone offline all the cells are pretty much firing in synchrony the brain is doing its background activity it's housekeeping, you can look at the EKG here very steady. These are breathing channels very steady breathing going on, everything is really stable. Okay, during deep sleep. It looks dramatically different. Now just to make things curious they move the channels down here, and C three, C 40102 are now up here, but this is dramatically different the amplitude of this activity number one is greatly different, much lower, much lower amplitude. And it's very fast. You can if you look at this and actually blow it up there are a ton of little peaks in here happening. And so if you're looking for the cycles here, the cycles of much faster. Many more waves per second. So that's what beta activity is anything about 14 cycles per second would be beta activity, and that's what you have right now as you're looking at this presentation, Unless you're starting to get a little drowsy. And then you're probably having a few data waves thrown in a little faster than delta, but not quite there, it's certainly not as fast as beta activity, but there are some other slow wave you can see a couple of little peaks here. So this is some of that VEDA activity. And it's interesting because it usually does occur around eye movements. So this looks like waking activity except it's internal waking activity. Right. When you're in dream sleep, the information that you're creating a story about derives from the thalamus from the inside of your brain, and all the information you took in during the day starts playing back and forth and likely was talking about memory and all that stuff is happening, partly in deep sleep partly in REM sleep a lot more in REM sleep because in REM sleep, we're processing the information we took in during the day, we're processing the emotional valence associated with all of Valence associated with how salient, the material was. That's the stuff that's going to stick. Now, in REM sleep, that's what the EG does, if you look at the eye channels. There are rapid eye movements right you know we know that's how we define REM sleep, one of the ways we define it with the rapid eye movements to moving back and forth. There's low amplitude fast activity with a few theta burst in the EG, and they put sensors on your chin, unless you have a beard like I do then they stick them here somewhere, and you get muscle activity muscle tone and the muscle tone signal here is just about the lowest of the night. In fact, you can see here in deep sleep, it's really low because there's no movement in the body is very relaxed, but you can see this is a rough line here, can everybody see that there's like, it's like a scratchy line you know it's not a solid line like this one here. So that muscle activity that's the lowest muscle activity because we're not moving, we're not doing anything, but in REM sleep, muscle activity is actively inhibited, So what's even lower, lowest of the night. There's a little burst here because there's probably a little bit of an arousal here I'm not going to go into that. But what this is highlighting here are these rapid eye movements, they go in the opposite direction, which is really kind of cool. So these you go, this is going up as it goes down. Here's another little one that's going down it just goes up. This is going down, as this goes up, this one's going down as this goes up. And the reason they go down and up. Okay, this is really cool. I can't see you by so I can't tell if you're staying with me or you're half asleep but I'm going to talk about it anyway.