Applying computer vision techniques to depression symptomatology through eye blink patterns in university students

ObjectiveThe increasing rate of depression among university students is a cause of great concern worldwide. With the recent growth in computer vision technology, eye movement features are proving beneficial in the assessment of depression owing to their non-invasiveness. Our objective was to determine the presence of depression through emotional elicitation by studying blink patterns in a student population.MethodThe blink data of 50 university students (26 males, 24 females) from different regions of the country within the age group of 21-26 years were collected using an experimental setup.ResultsStatistical tests on blink data revealed that blink rate changes with changes in emotion from joy to sadness or vice versa, irrespective of one's depression status. Another explanation is that the blink rates of the healthy and depressed groups differed significantly during sad emotional states. The tests also indicated a half-closed eye state as a possible symptom of depression.ConclusionsThese findings suggest that the prevalence of mental health problems can be detected at an early stage by designing simple non-invasive procedures, such as blink pattern analysis driven by technology and expert advice, which will help prevent the further development of such illnesses.