The brain patterns were not identical in healthy participants, people with depression and people with suicidal thoughts. The most important message is therefore not that brain signals, eye movements or sweat can replace psychiatrists. Overall, the USC work is an interesting step toward more measurable mental health assessment, but it remains an emerging research approach rather than a ready-to-use suicide prediction tool. If you care about mental health, please read studies about 6 foods you can eat to improve mental health, and B vitamins could help prevent depression and anxiety. For more health information, please see recent studies about how dairy foods may influence depression risk, and results showing Omega-3 fats may help reduce depression.