Emotional memories create long-term epigenetic changes

This 2015 German rodent study found: “Histone modifications predominantly changed during memory acquisition and correlated surprisingly little with changes in gene expression. Although long-lasting changes were almost exclusive to neurons, learning-related histone modification and DNA methylation changes also occurred in non-neuronal cell types, suggesting a functional role for non-neuronal cells in epigenetic learning.” Chromatin modifications … Continue reading Emotional memories create long-term epigenetic changes

Research on brain areas involved when we imagine people, places, and pleasantness

This highly jargoned 2014 Harvard study was on how people imagine that they’ll feel in the future. One of the researchers was an author of: Problematic research: If you don’t feel empathy for a patient, is the solution to fake it? Problematic research on memory I was surprised that this study also didn’t ignore the … Continue reading Research on brain areas involved when we imagine people, places, and pleasantness

Hippocampus replays memories and preplays to extend memories into future scenarios

This 2013 MIT rodent study of the hippocampus portion of the limbic system focused on the “place” cells in the CA1 segment of the hippocampus. During rest and sleep, the subjects’ hippocampi replayed and consolidated memories. They also preplayed events in the place cells to imagine future scenarios of “novel spatial experiences of similar distinctiveness … Continue reading Hippocampus replays memories and preplays to extend memories into future scenarios