Sleep promotes lasting changes in selective memory for emotional scenes
Open Access
- 1 January 2012
- journal article
- research article
- Published by Frontiers Media SA in Frontiers in Integrative Neuroscience
- Vol. 6, 108
- https://doi.org/10.3389/fnint.2012.00108
Abstract
Although we know that emotional events enjoy a privileged status in our memories, we still have much to learn about how emotional memories are processed, stored, and how they change over time. Here we show a positive association between REM sleep and the selective consolidation of central, negative aspects of complex scenes. Moreover, we show that the placement of sleep is critical for this selective emotional memory benefit. When testing occurred 24hr post-encoding, subjects who slept soon after learning (24hr Sleep First group) had superior memory for emotional objects compared to subjects whose sleep was delayed for 16hr post-encoding following a full day of wakefulness (24hr Wake First group). However, this increase in memory for emotional objects corresponded with a decrease in memory for the neutral backgrounds on which these objects were placed. Furthermore, memory for emotional objects in the 24hr Sleep First group was comparable to performance after just a 12hr delay containing a night of sleep, suggesting that sleep soon after learning selectively stabilizes emotional memory. These results suggest that the sleeping brain preserves in long-term memory only what is emotionally salient and perhaps most adaptive to remember.Keywords
This publication has 51 references indexed in Scilit:
- An opportunistic theory of cellular and systems consolidationTrends in Neurosciences, 2011
- Intrusive images in psychological disorders: Characteristics, neural mechanisms, and treatment implications.Psychological Review, 2010
- Learning by observation requires an early sleep windowProceedings of the National Academy of Sciences of the United States of America, 2009
- The role of sleep in false memory formationNeurobiology of Learning and Memory, 2009
- What Factors Need to be Considered to Understand Emotional Memories?Emotion Review, 2009
- REM Sleep, Prefrontal Theta, and the Consolidation of Human Emotional MemoryCerebral Cortex, 2008
- Neural Substrates of Increased Memory Sensitivity for Negative Stimuli in Major DepressionBiological Psychiatry, 2008
- Immediate memory consequences of the effect of emotion on attention to picturesLearning & Memory, 2008
- Sleep-Related Hippocampo-Cortical Interplay during Emotional Memory RecollectionPLoS Biology, 2007
- THE AMYGDALA MODULATES THE CONSOLIDATION OF MEMORIES OF EMOTIONALLY AROUSING EXPERIENCESAnnual Review of Neuroscience, 2004