scholarly journals The Influence of Sleep on Emotional Memory Consolidation Processes

2018 ◽  
Vol 2 (5) ◽  
Author(s):  
Rafael De Jesus ◽  
William Fishbein
Keyword(s):  
Information Processing ◽  
Memory Consolidation ◽  
Emotional Memory ◽  
Emotional Memories ◽  
Affective Functioning

An emerging trend in the literature has accumulated evidence in support for sleep’s role in the processing of episodic emotional memories. This review presents varying perspectives and models regarding information processing and affective functioning as it relates to sleep, emotions, and memory. Adaptive and maladaptive functions as it directly relates to sleep and emotions are also discussed herein. Collectively, the findings attempt to build on the literature and offer some clarity into the interaction of sleep, emotions, and memory.

Stress and Sleep Interact to Selectively Consolidate and Transform Negative Emotional Memories

2020 ◽  
pp. 163-188
Author(s):  
Jessica D. Payne
Keyword(s):  
Memory Consolidation ◽  
Stress Hormones ◽  
Emotional Memory ◽  
Initial Experience ◽  
Depression And Anxiety ◽  
Emotional Experiences ◽  
Emotional Memories ◽  
Emotional Aspects ◽  
Clinical Conditions ◽  
The Brain

Memory consolidation processes can be highly selective. For example, negative emotional aspects of events tend to be consolidated more readily than other, more neutral, aspects. This chapter discusses evidence that the sleeping brain provides an ideal environment for memory consolidation, and that active, as opposed to passive, sleep-based consolidation processes are particularly important in explaining why emotional memories are retained so well. I also review evidence that elevated levels of stress hormones (cortisol, norepinephrine), particularly during the time of the initial experience, support downstream emotional memory consolidation. The chapter then proposes a working model that describes why arousal and stress at encoding may set the stage for sleep to etch emotional memories in the brain on a long-lasting basis and presents recent data to support this model. However, in addition to promoting the consolidation and stabilization of emotional memories, evidence suggests that sleep and stress also transform memories—in both adaptive and maladaptive ways. Memory for negative emotional experiences, while adaptive in general, can also contribute to the etiology and perpetuation of clinical conditions such as depression and anxiety. Thus, I argues that it is possible to have “too much of a good thing” and suggests ways that the transformative nature of stress and sleep might be used to restructure maladaptive memories in the clinic.

Pharmacologically Increasing Sleep Spindles Enhances Recognition for Negative and High-arousal Memories

2013 ◽  
Vol 25 (10) ◽  
pp. 1597-1610 ◽  
Author(s):  
Erik J. Kaestner ◽  
John T. Wixted ◽  
Sara C. Mednick
Keyword(s):  
Rem Sleep ◽  
Memory Consolidation ◽  
Declarative Memory ◽  
Memory Performance ◽  
Emotional Memory ◽  
Limited Range ◽  
Sleep Spindles ◽  
Sleep Spindle ◽  
Emotional Stimuli ◽  
Valence And Arousal

Sleep affects declarative memory for emotional stimuli differently than it affects declarative memory for nonemotional stimuli. However, the interaction between specific sleep characteristics and emotional memory is not well understood. Recent studies on how sleep affects emotional memory have focused on rapid eye movement sleep (REM) but have not addressed non-REM sleep, particularly sleep spindles. This is despite the fact that sleep spindles are implicated in declarative memory as well as neural models of memory consolidation (e.g., hippocampal neural replay). Additionally, many studies examine a limited range of emotional stimuli and fail to disentangle differences in memory performance because of variance in valence and arousal. Here, we experimentally increase non-REM sleep features, sleep spindle density, and SWS, with pharmacological interventions using zolpidem (Ambien) and sodium oxybate (Xyrem) during daytime naps. We use a full spread of emotional stimuli to test all levels of valence and arousal. We find that increasing sleep spindle density increases memory discrimination (da) for highly arousing and negative stimuli without altering measures of bias (ca). These results indicate a broader role for sleep in the processing of emotional stimuli with differing effects based on arousal and valence, and they raise the possibility that sleep spindles causally facilitate emotional memory consolidation. These findings are discussed in terms of the known use of hypnotics in individuals with emotional mood disorders.

scholarly journals Targeted memory reactivation in REM but not SWS selectively reduces arousal responses

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Isabel C. Hutchison ◽  
Stefania Pezzoli ◽  
Maria-Efstratia Tsimpanouli ◽  
Mahmoud E. A. Abdellahi ◽  
Penelope A. Lewis
Keyword(s):  
Slow Wave Sleep ◽  
Sleep Stage ◽  
Emotional Memory ◽  
Rapid Eye Movement Sleep ◽  
Emotional Experiences ◽  
Memory Reactivation ◽  
Emotional Memories ◽  
The Impact ◽  
Subjective Arousal ◽  
Spontaneous Reactivation

AbstractA growing body of evidence suggests that sleep can help to decouple the memory of emotional experiences from their associated affective charge. This process is thought to rely on the spontaneous reactivation of emotional memories during sleep, though it is still unclear which sleep stage is optimal for such reactivation. We examined this question by explicitly manipulating memory reactivation in both rapid-eye movement sleep (REM) and slow-wave sleep (SWS) using targeted memory reactivation (TMR) and testing the impact of this manipulation on habituation of subjective arousal responses across a night. Our results show that TMR during REM, but not SWS significantly decreased subjective arousal, and this effect is driven by the more negative stimuli. These results support one aspect of the sleep to forget, sleep to remember (SFSR) hypothesis which proposes that emotional memory reactivation during REM sleep underlies sleep-dependent habituation.

scholarly journals Out-of-body experience favors emotional memory consolidation

2020 ◽  
Vol 25 (2) ◽  
pp. 13
Author(s):  
Konstantinos Christos Daoultzis ◽  
Sophie Alida Bogemann ◽  
Yoshiyuki Onuki ◽  
Martijn Meeter ◽  
Ysbrand Van Der Werf
Keyword(s):  
Skin Temperature ◽  
Memory Consolidation ◽  
Emotional Memory ◽  
Control Group ◽  
Strong Impact ◽  
Body Ownership ◽  
Body Experience ◽  
Body Experiences ◽  
Emotional Pictures ◽  
Retrieval Session

Body ownership reflects our ability to recognise our body at a certain location, enabling us to interact with the world. Emotion has a strong impact on memory and body ownership; interestingly, skin temperature may at least in part mediate this impact. Previous studies have found that out-of-body experiences (OBE) impair memory encoding and cause skin temperature to drop. In the present study a new method for inducing OBE was designed and their impact on a different stage and type of memory processing (emotional memory consolidation) and on skin temperature was investigated. In our experiment, we presented three types of emotional pictures (neutral, pleasant, unpleasant) before inducing OBE and testing our participants’ recognition memory in a retrieval session. Throughout the whole experiment, both neck and hand skin temperature were measured using iButtons. Participants’ performance was calculated using d-prime and statistical analyses included one-way ANOVA, probing the relationship between the score on the OBE questionnaire, performance and skin temperature; we also compared the differences between the experimental and a control group. Results showed that OBE favour emotional memory consolidation and cause a temperature increase, supporting the embodied cognition theory as proposed by Anderson (2003). Future studies should expand our findings, to rule out that participants experiencing OBE could have a better memory at baseline or that temperature could be increased due to other reasons.

scholarly journals Does sleep selectively strengthen certain memories over others? A critical review of the literature

2020 ◽  
Author(s):  
Per Davidson ◽  
Peter Jönsson ◽  
Ingegerd Carlsson ◽  
Edward Pace-Schott
Keyword(s):  
Literature Review ◽  
Beneficial Effect ◽  
Eye Movement ◽  
Memory Consolidation ◽  
Critical Review ◽  
Special Focus ◽  
Rapid Eye Movement Sleep ◽  
Review Of The Literature ◽  
Test Expectancy ◽  
Emotional Memories

Sleep has been found to have a beneficial effect on memory consolidation. It has furthermore frequently been suggested that sleep does not strengthen all memories equally. The aim of this literature review was to examine the studies that have measured whether sleep selectively strengthens certain kinds of declarative memories more than others, depending on such factors as emotion, reward, test-expectancy or different instructions during encoding. The review of this literature revealed that although some support exists that sleep is more beneficial for certain kinds of memories, the majority of studies does not support such an effect. A second aim of this review was to examine which factors during sleep that have been found to selectively benefit certain memories over others, with a special focus on the often-suggested claim that rapid eye movement sleep primarily consolidates emotional memories. The review of this literature revealed that no sleep variable has been reliably found to be specifically associated with the consolidation of certain kinds of memories over others.

Sex differences in emotional memory consolidation: The effect of stress-induced salivary alpha-amylase and cortisol

2012 ◽  
Vol 89 (3) ◽  
pp. 539-544 ◽  
Author(s):  
Kim L. Felmingham ◽  
Thu Phuong Tran ◽  
Wing Chee Fong ◽  
Richard A. Bryant
Keyword(s):  
Sex Differences ◽  
Memory Consolidation ◽  
Emotional Memory ◽  
Alpha Amylase ◽  
Salivary Alpha Amylase

scholarly journals Remix videos and the mnemonic imagination: Emotional memories of late Soviet childhood

2018 ◽  
Vol 22 (1) ◽  
pp. 9-36 ◽  
Author(s):  
Sudha Rajagopalan
Keyword(s):  
Soviet Union ◽  
Emotional Memory ◽  
Soviet Period ◽  
Video Sharing ◽  
Emotional Memories ◽  
Emotional Work ◽  
Historical Specificity ◽  
Selection Of

This article analyses a selection of Russian digital remix videos that are put together to argue for a sympathetic and affectionate memory of childhood in the late Soviet period and then posted online. In their imaginative and deliberate structuring of images these videos are meant to evoke resonant nostalgic recollections among viewers. Three themes emerge in these videos to suggest that this phase of life in the late Soviet Union had positive attributes: sociality and healthy preoccupations, the endurance and accessibility of things, and the historical specificity (in other words, the Sovietness) of that experience. The videos, with the comments below, constitute an emotional memory site where nostalgia is the paramount mode, but it must enter into a dialogue with other competing emotions about the Soviet past in the mnemonic space of video-sharing platforms. As a result, the emotional work online of remembering childhood becomes contested and deeply political.

scholarly journals The influence of REM sleep and SWS on emotional memory consolidation in participants reporting depressive symptoms

Cortex ◽  
2018 ◽  
Vol 99 ◽  
pp. 281-295 ◽  
Author(s):  
Marcus O. Harrington ◽  
Jennifer M. Johnson ◽  
Harriet E. Croom ◽  
Kyla Pennington ◽  
Simon J. Durrant
Keyword(s):  
Depressive Symptoms ◽  
Rem Sleep ◽  
Memory Consolidation ◽  
Emotional Memory
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