Depression may have multiple causes but often is associated with lowered activity in the Dorsolateral Prefrontal Cortex (DLPFC). This area of the brain helps regulate mood, focus, and can even impact sleep and appetite. When this area of the brain fluctuates in activity (more or less active) these functions are affected.
The Flow tDCS headset delivers a weak current (2 mA) to the DLPFC via electrodes placed on the forehead, to restore activity in brain cells which result in a reduction of depressive symptoms. Since Flow is able to directly target specific brain areas involved in depression the side effects are less severe than those from antidepressants.