Classifying Depression Severity in Recovery from Major Depressive Disorder via Dynamic Facial Features.

Major depressive disorder is a common psychiatric illness. At present, there are no objective, nonverbal, automated markers that can reliably track treatment response. Here, we explore the use of video analysis of facial expressivity in a cohort of severely depressed patients before and after deep brain stimulation (DBS), an experimental treatment for depression. We introduced a set of variability...