Neuronal Activity Scale (IMAGE) NIH/National Eye Institute Caption Greater activation of neurons on one side of the superior colliculus versus the other signals the detection of a relevant event. Credit James Herman, Ph.D., National Eye Institute Usage Restrictions None License Licensed content 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.