5 ms·

There is a subreddit for this if you feel like reading more http://www.reddit.com/r/tDCS/ http://www.reddit.com/r/tDCS/

• wisty 13y ago
  With the warning on the subreddit: Caution: you can be killed by a 9V battery
  • Ygg2 13y ago
    You can be killed by a 9V battery? How? Not from the charge I hope (not sarcastic).
    • will_work4tears 13y ago
      There's a link to the darwinawards site on the subreddit. Apparently it was a Navy service member that stuck the electrodes into his fingers and the current traveled through the bloodstream across his heart. Sounds like an urban legend, but if you read the back and forth on it, it's rather interesting.
      • tekromancr 13y ago
        It is theoretically possible to do that. Blood is wonderfully conductive with all the electrolytes.
      • RobotCaleb 13y ago
        I believe you have to provide a path that would go through the heart. Simply piercing the same finger with both electrodes shouldn't do much to the heart.
        • will_work4tears 13y ago
          I believe he pierced each finger with a different electrode.
    • tankbot 13y ago
      I suppose you could potentially choke on it. Darwin was right you know.
    • jhaywood 13y ago
      The internal electrical resistance of your tissues is a lot lower than the resistance provided by your skin. If you puncture your skin with electrodes a 9V battery can generate enough current to stop your heart.