Two-color cortex (IMAGE) Picower Institute at MIT Caption Inhibitory interneurons in the visual cortex (PV cells are green; SST cells are red), combine to regulate the reliability of image representation by excitatory neurons. Credit Murat Yildirim/MIT Picower Institute Usage Restrictions Credit if used License Original 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.