In this multi-center study, approximately 60 subjects with Major Depressive Disorder (MDD) will undergo Magnetic Resonance Imaging (MRI) scanning during transcranial Photobiomodulation (tPBM) before and after a randomized, double-blinded, controlled 16 session course of treatment with tPBM or sham.
The purpose of this research study is to determine if application of near infrared energy to the forehead can change blood flow in the brains of people with depression. Near infrared energy is like light but is not visible to the human eye.