Still, the foc.us is one of a few tDCS headsets designed for the consumer market and can, the inventor Michael Oxley claims, improve your working or short-term memory when the electrodes are placed on your prefrontal cortex.

ENGADGET

The authors of a new study wanted to determine whether short-term mindfulness training might help improve the working memory, focus, and ultimately, the GRE scores, of kids who took a two-week class on mindfulness.

FORBES: The 'New' Benefits Of Mindfulness: Improved Memory, Focus, And GRE Scores