Concept art (IMAGE) Trinity College Dublin Caption The new theory proposes that forgetting is due to circuit remodelling that switches engram cells from an accessible to an inaccessible state. Credit Dr Nora Raschle. Usage Restrictions None 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.