A New Window into Macaque Brain Connections (image) RIKEN Share Print E-Mail Caption The opto-OISI experiment. Light was used to stimulate the right visual cortex at different locations indicated by colored circles. Corresponding activity was found in the left visual cortex using optical intrinsic signal imaging (OISI). Credit RIKEN Usage Restrictions credit RIKEN Share Print E-Mail 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.