Submission + - The Most Painful Biofeedback Machine Ever (harcoslabs.com) 1
wintersynth writes: We hacked a Mindflex toy brainwave reader to electrocute people if their brainwave frequency got too high (by concentrating). We took outputs off of the 5 level LED indicator, put the outputs through a transistor/resistor/relay circuit to give 2 levels of high voltage through an electric shock circuit right into the user's arm. I thought the Slashdot audience would appreciate the how to and video and this concern: if we used this device frequently, would we condition our brains to always stay in idle (alpha) state and would lose our ability to concentrate?
