(IMAGE) Research Caption Fig. 4. MT MEA reveals distinct cell-level activity and DA concentrations in the NAc across wake, NREM, and REM sleep. Credit Copyright © 2025 Qianli Jia et al. 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.