Motor-driven Artificial Antennae (image) North Carolina State University Caption Motorized tactile stimulation system shows the power supply (right), controller (center) and 20 Petri dishes mounted on a stepper motor. Inset shows an isolated female cockroach in a Petri dish with a duck feather mounted on the rotating motor shaft. Credit Adrienn Uzsak Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.