Early results suggest that LLLT may have significant promise in the treatment of clinical disorders. Schiffer et al. (2009) found that a single LLLT treatment to the forehead resulted in an increased cerebral blood flow and significant beneficial effect in patients with major depression and anxiety. Previous research conducted in the Gonzalez-Lima lab showed that healthy human subjects receiving LLLT showed significantly higher positive affect at two week follow-up sessions relative to subjects in the "placebo-light" condition (Barrett & Gonzalez-Lima, 2014). Importantly, no adverse side effects were found in subjects for either study, either immediately after the initial treatment, or at two or four weeks post-treatment. We plan to follow the LLLT treatment protocol from these two studies, immediately prior to running subjects through the ABM procedure.