Inside Neuroelectrics, the brain science start-up hoping to curb epilepsy and depression [Video]

Barcelona-based start-up Neuroelectrics is developing therapies that it says will improve the lives of people living with brain disease. The group manufactures around 400 devices which it ships to 75 different countries worldwide each year. CNBC Tech took a tour of Neuroelectrics facilities and even tried out its main product, a neurostimulating electrical headcap.