Remote-control tech turns cockroaches into beasts of burden – Future of Tech on NBCNews.com: “Cockroaches use their antennae to feel their way around the environment. ‘What we do is we insert tiny electrodes to the antennae and we send low-power pulses [to them],’ Bozkurt said.
The pulse simulates the antenna feeling an obstacle, such as a wall, causing the cockroach to turn the other direction. Buzz the left antenna, the cockroach turns right; buzz the right one, the bug turns left.”