Monitoring Depression
From: Technology Review - 02/2012 - page 86
By: Robert Dickerson, et al

Surveillance with in-home sensors can track a person's mental state

University of Virginia researchers developed a combination of in-home sensors
and cloud software designed to detect signs that someone is displaying
behavior consistent with ­depression. One home was outfitted with sensors
that report on the user's sleep quality and body weight. It also registered
when the person was at home and tracked movement inside the house. Software
can combine the data gathered by those sensors into a "depression index" that
could signal to caregivers when a person may need help to prevent or overcome
an episode of depression. 

Read the entire article at:
http://www.technologyreview.com/computing/39280/

Links:
"Empath: A Continuous Remote Emotional Health Monitoring System for Depressive Illness"
http://www.vs.inf.ethz.ch/edu/HS2011/CPS/papers/dickerson11_empath.pdf

Robert F. Dickerson
http://www.rfdickerson.com/

Empath
http://www.rfdickerson.com/research.php