FIG 1 (IMAGE) Compuscript Ltd Caption Figure 1 All-fiber-transmission multi-color recording and optogenetics system. (a) An image of the four-branch fiber bundle. (b) Diagram of the four-branch fiber bundle common branch v. (c) Schematic diagram of the multi-function fiber photometry system constructed with the four-branch fiber bundle. (d) Schematic diagram of the lock-in amplifier for the multi-function fiber photometry system. Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY 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.