Figure 1 (IMAGE) Tohoku University Caption When a mouse is presented with an image that oscillates left and right, the mouse initially cannot follow the image well, but after repeated training, the visual pursuit of the image becomes more accurate. In this study, it was shown that there is online learning that progresses during training and offline learning that progresses slowly during post-training rest and that the function of glial cells in the brain is involved in each learning process. Credit Teppei Kanaya & 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.