Graphic of Memories (IMAGE) University of California - San Diego Caption In this representation of memories, sleep represents a period when the human brain can consolidate old memories with new memories, without loss of learning. In artificial neural networks, new information can overwrite old information, known as catastrophic forgetting. Credit Golden, R. et al. 2022, PLOS Computational Biology Usage Restrictions Use photo credit 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.