Just because I ran across it today looking for something else. I started my blog in 2012. A device of this nature was obvious to me then. The patent was filed in 2013 and granted in December of 2014.  Do you see anything novel in this device? Will the trolls now come calling whenever a head-mounted stimulation device gains any traction in the consumer market? I’m naive when it comes to patents but this looks overly broad and obvious. Considering  other previous patents listed in the application I wonder how this one could have been awarded.

Head Worn Brain Stimulation Device and Method
US 20140257448 A1
Abstract

A self-contained portable head worn device and methods to stimulate a portion of the brain of a wearer are presented. A first electrode is held by the head worn device against the scalp of the wearer in a first location and a second electrode is held against the scalp of the wearer in a second location. A pulse generator generates a first electric signal received by the first electrode and a second electric signal received by the second electrode. A power source is connected to the pulse generator.

via Patent US20140257448 – Head Worn Brain Stimulation Device and Method – Google Patents.