Dreaming with Purpose (IMAGE) University of Tsukuba Caption Figure caption: The activity of ABNs during REM sleep consolidates memory. Fear learning recruits a population of young adult-born neurons (ABNs); these ABNs are reactivated during subsequent rapid eye movement (REM) sleep. Optogenetic manipulation of this ABN activity alters structural remodeling of ABN spines and impairs memory consolidation. Credit University of Tsukuba Usage Restrictions Unauthorized use is prohibited License Licensed 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.