Roving Receptors (2 of 2) (video) Duke University Loading video... Caption Once the receptors locate the signal, they stay put in the region of the cell membrane that is closest to its source. Credit Video courtesy of David Sherwood. 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.