The activation of young brain cells in adult mice is necessary not just for forming memories, but consolidating them during rapid eye movement sleep, a study shows.
To tease apart brain regions involved in forming versus remembering memories, scientists engineered mice whose brain cells could be manipulated and tagged.
Retrospective carbon dating of human hippocampal cells confirms substantial adult neurogenesis and suggests that the process contributes to brain function.
Microbes affect weight loss; dozens of cancer-linked genes identified; a climate change scientists speaks out about personal attacks; isolation among elderly linked to death