High-Precision Stimulation of the Retina (image) NIH/National Eye Institute Caption Chichilnisky and colleagues used an electrode array to record activity from retinal ganglion cells (yellow and blue) and feed it back to them, reproducing the cells' responses to visual stimulation. Credit EJ Chichilnisky, Stanford University. Usage Restrictions Please credit EJ Chichilnisky, Stanford University. 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.