Using psychology on data collected 24/7 can also have a positive effect. We (researchers from the Menthal project + psychologists) are planning to run this project in the following months: http://www.pi.uni-tuebingen.de/arbeitsbereiche/klinische-psy...
I believe I said that as well ... of course it is good for medical or scientific reasons to have more and better data. And I don't see any problem with that, when the patients know and consent about the surveilance. So go on with that and good luck ...