"Memory engrams" refers to the physical or biochemical changes that occur in the brain when a memory is formed. It's like a blueprint or imprint that helps store and retrieve our memories. Full definition
This study demonstrated that direct optogenetic activation of specific hippocampal memory engram cells resulted in highly specific memory retrieval (Roy et al., 2016). (elifesciences.org)
When they arrived in Toronto, Josselyn says, she and Frankland collaborated on a study aimed at taking the next step in manipulating the CREB - enriched memory engram: killing it. (discovermagazine.com)
Clearing neuronal networks from transient memory engrams during sleep consolidates memories (science.sciencemag.org)