Figure 4 (IMAGE) Tohoku University Caption Astrocytes are capable of triggering fear. Astrocyte ChR2 photoactivation alone induced freezing responses akin to those observed after receiving an electric foot shock. In contrast, astrocyte ArchT photoactivation suppressed the freezing responses following a footshock Credit ©Hiroki Yamao, Ko Matsui Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. 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.