Mindflex, the brandwave-detecting game, will probably give you a headache no matter what. But Harcos Labs decided to take it further, with a hacked Mindflex that shocks you when you concentrate too hard. The result: science, and hilarious shock videos.

The original Mindflex headset indicates how hard you're concentrating with a series LEDs. But with a little ingenuity and an electroshock kit, the devilish geniuses at Harcos turned it into something of a torture device:

Harcos hooked up the leads of the LEDs to a transistor/resistor relay network so they'd instead activate an electric-shock kit made by QKit. The end result? Concentrate a little, and you'll get zapped a little. Concentrate hard, and you'll get an electrical pulse that will make you think you've wandered onto the set of Green Mile.

Of course, the more worried you are about getting shocked, the higher the voltage. Which is cruel. And unusual. And so much fun to watch. [Wired]