The next time a San Francisco Giant hits a game-winning home run or turns a great double play to end a rival’s rally, you may be able to thank neuroscience. Today, Halo Neuroscience, a San Francisco startup that’s developed a device aimed at boosting the performance of athletes, announced it has officially been helping the Giants get the most out of its players. The device, the Halo Sport, stimulates the brain’s motor cortex, energizing motor