Hippocampal neurons expressing psychLight (IMAGE) Cell Press Caption This is a representative image of cultured dissociated hippocampal neurons transiently expressing psychLight1 and psychLight2. Scale bar, 20 mm. Credit Calvin Ly Usage Restrictions Credit Required. 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.