Brain-zapping devices have shocking potential, but are they safe?

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The designers of Halo Sport, a headband they claim can improve athletic performance by shocking the brain, say their device could one day also help improve memory. »»» Subscribe to The National to watch more videos here: https://www.youtube.com/user/CBCTheNational?sub_confirmation=1 Voice Your Opinion & Connect With Us Online: The National Updates on Facebook: https://www.facebook.com/thenational The National Updates on Twitter: https://twitter.com/CBCTheNational The National Updates on Google+: https://plus.google.com/+CBCTheNational »»» »»» »»» »»» »»» The National is CBC Television's flagship news program. Airing seven days a week, the show delivers news, feature documentaries and analysis from some of Canada's leading journalists.