Finding those Eureka moments that allow us to solve difficult problems can be an electrifying experience, but rarely like this. Richard Chi and Allan Snyder managed to trigger moments of insight in volunteers, by using focused electric pulses to block the activity in a small part of their brains. After the pulses, people were better at solving a tricky puzzle by thinking outside the box.

This is the latest episode in Snyder’s quest to induce extraordinary mental skills in ordinary people. A relentless eccentric, Snyder has a long-lasting fascination with savants – people like Dustin Hoffman’s character in Rain Man, who are remarkably gifted at tasks like counting objects, drawing in fine detail, or memorising vast sequences of information.

Snyder