In very simple words, mind is actually electrical waves or electrical signals generated by the brain and they oscillate at specific frequencies.
What "Sooma Depression Device" is doing is modulating hypoactive areas of brains with a weak current to relieve depression and this process is more than 60% effective.
As fellow hunters said, there are many depression patients among us due to the current circumstances and day to day fatiguing routines, and these numbers are increasing by the day, I think, "Sooma Depression Therapy" is gonna be a great help for us all to overcome depression crisis.
Thanks for your nice feedback. :)