Get ahead in Silicon Valley: Upgrade your mind with a brain buzzer

One device applies electric currents to your head to help you meditate while another encourages you to breathe more deeply – Silicon Valley is abuzz with entrepreneurs offering gadgets to help you ‘upgrade your mind’Using nootropic drugs to ‘upgrade your mind’Upgrade your diet with meals in a beakerAt the San Francisco consciousness hacking monthly meet-up, about 150 personal development geeks are crowding around hi-tech consumer devices that promise a more relaxed you. There is a brai