Aspen, Colorado – They look like a set of fancy headphones. But a set of spikes inside the band act as electrodes to stimulate the brain. According to California startup Halo Neuroscience, the device can help improve the performance of athletes, pilots and surgeons, and potentially help rehabilitation for stroke victims. "The brain is an electrical organ," said Daniel Chao, a physician and co-founder of Halo, in discussing the product at this week's Fortune Brainstorm Tech conference. By stimulating the motor cortex, Chao says the Halo device can "extract latent potential" in the brain to improve performance for people who rely on making quick decisions and movements such as athletes.