As before and after videos go, these are as dramatic as you will ever see. You can watch them yourself at www.kringelbach.dk/nrn:
■ A man in his fifties flicks a switch on a small battery-powered device, and begins shaking violently and uncontrollably. He returns the switch to its original position, and the shaking is quelled.
Your organisation does not have access to this article.
Sign up today to give your students the edge they need to achieve their best grades with subject expertise
Subscribe
