It would be interesting if you could correlate that to what the person is doing physically during each sleep type. By way of a video device (similar to what is

It would be interesting if you could correlate that to what the person is doing physically during each sleep type. By way of a video device (similar to what is done with that part of a sleep study) that captures and can be played back or analyzed. I was actually going to set this up for a person with sleep apnea but they passed away before I could get the solution cobbled together. To summarize: Get a normal video capture (baby monitor etc.), capture video, analyze and play back video and see the differences..