Enhanced selective memory consolidation following post-learning pleasant and aversive arousal

Liu, Denise Li Juan; Graham, Steven; Zorawski, Michael

doi:10.1016/j.nlm.2007.09.001

Cited by 71 publications

(94 citation statements)

References 58 publications

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“…This finding contrasts with a few studies suggesting that arousal interacts with arousal state at encoding and with the qualitative aspects of the stimuli (Cahill et al, 2003;Liu et al, 2008), instead showing that arousal induced after learning words enhances memory consolidation generally, spanning a lengthy task without preference for material type or position. Thus, the results support the use of arousal in memory intervention strategies.…”

Section: Discussioncontrasting

confidence: 96%

“…In contrast, several recent studies found arousal-induced modulation effects on memory that were selective for emotive stimuli when both high and low arousal stimuli were employed, leading to conclusions that arousal affects memory only for arousing stimuli (Buchanan & Lovallo, 2001;Cahill et al, 2003;Liu et al, 2008). Such an interaction hypothesis is feasible.…”

Section: Discussionmentioning

confidence: 93%

“…In contrast, several studies using both pre-learning (Buchanan & Lovallo, 2001) and post-learning (Cahill et al, 2003;Liu et al, 2008) treatments that alter stress hormones affected delayed memory retrieval but they did so only for arousing (emotional) stimuli or only for items presented early in a task session (Cahill & Alkire, 2003). Thus, it has been suggested that arousal induced either before or after learning may only be effective to modulate inherently arousing stimuli (Cahill et al, 2003) or that arousal or novelty at encoding is necessary for post-learning arousal treatments to modulate memory (Cahill & Alkire, 2003;Okuda, Roozendaal, & McGaugh, 2004).…”

Section: Introductionmentioning

confidence: 98%

“…In one pre-learning cortisol administration study, the effects were equivalent for both positive and negative stimuli (Buchanan & Lovallo, 2001), in another that induced stress after learning, the effect was only for negative stimuli (although only negative stimuli were used; Cahill et al, 2003), but in another study that used both negative and humorous video manipulations after learning, the effect was only significant for positive stimuli (although negatively stimuli trended toward significance; Liu et al, 2008). accessed by following the link in the citation at the bottom of the page.…”

Section: Introductionmentioning

confidence: 99%

“…First, the previous studies either solely used recall (Cahill et al, 2003) or found group differences in recall but not in recognition, which may have been due to less than optimal parameters in the recognition tests (Buchanan & Lovallo, 2001;Liu et al, 2008). However, the inherent disadvantage of incidental learning tasks is that recall performance tends to be quite low, particularly after a long delay.…”

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confidence: 99%

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Enhanced post-learning memory consolidation is influenced by arousal predisposition and emotion regulation but not by stimulus valence or arousal

Nielson

Lorber

2009

Neurobiology of Learning and Memory

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Emotionally arousing stimuli are more memorable than neutral ones and arousal induced after learning enhances later retrieval. However, there is as yet little study of how stimulus qualities might interact with induced arousal and how individual differences might influence the modulation of memory. Thus, the present study examined the effect of arousal induced after learning on memory for words that varied in both arousal and valence quality, as well as the influence of three individual differences factors that are known to influence arousal response: emotional suppression, emotional reappraisal, and arousal predisposition. Seventy-six adults (57 female) viewed and rated 60 words that normatively ranged from high to low in arousal and valence. Ten minutes later, they viewed a 3-min comedic or neutral video clip. Arousal induced after learning enhanced 1-week delayed memory, spanning the lengthy task without preference for word type or serial position, contrasting with reports of arousal effects interacting with stimulus NOT THE PUBLISHED VERSION; this is the author's final, peer-reviewed manuscript. The published version may be accessed by following the link in the citation at the bottom of the page.

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Section: Discussioncontrasting

confidence: 96%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Enhanced post-learning memory consolidation is influenced by arousal predisposition and emotion regulation but not by stimulus valence or arousal

Nielson

Lorber

2009

Neurobiology of Learning and Memory

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Exercise and the Brain: Neurogenesis, Synaptic Plasticity, Spine Density, and Angiogenesis

Wang

Praag

2012

Functional Neuroimaging in Exercise and Sport Sciences

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This chapter focuses on the mechanisms underlying the effects of exercise on brain structural and synaptic plasticity as well as cognitive function in rodents. In normal young and aged mice wheel running increases neurotrophin, neurotransmitter, and angiogenesis levels, and enhances fi ne neuronal morphology such as dendritic branching and spine density. Speci fi c to the dentate gyrus of the hippocampus is the increase in the production of new neurons with running, which may mediate at least in part the observed improvements in learning and memory. The role of exercise in mouse models of neurodegeneration such as Alzheimer's, Parkinson's disease and Huntington's disease is also evaluated and found to be generally bene fi cial with the potential exception of Huntington's disease. Furthermore, possible peripheral triggers elicited with exercise, such as muscle activation, that lead to improvements in brain structure and function are discussed.

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Pre-encoding administration of amphetamine or THC preferentially modulates emotional memory in humans

2012

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Rationale Many addictive drugs are known to have effects on learning and memory, and these effects could motivate future drug use. Specifically, addictive drugs may affect memory of emotional events and experiences in ways that are attractive to some users. However, few studies have investigated the effects of addictive drugs on emotional memory in humans. Objectives This study examined the effects of the memory-enhancing drug dextroamphetamine (AMP) and the memory-impairing drug Δ9-tetrahydrocannabinol (THC) on emotional memory in healthy volunteers. Methods Participants completed three experimental sessions across which they received capsules containing placebo and two doses of either AMP (10 and 20 mg; N=25) or THC (7.5 and 15 mg; N=25) before viewing pictures of positive (pleasant), neutral, and negative (unpleasant) scenes. Memory for the pictures was assessed two days later, under drug-free conditions. Results Relative to placebo, memory for emotional pictures was improved by AMP and impaired by THC, but neither drug significantly affected memory for unemotional pictures. Positive memory biases were not observed with either drug, and there was no indication that the drugs’ memory effects were directly related to their subjective or physiological effects alone. Conclusions This study provides the first clear evidence that stimulant drugs can preferentially strengthen, and cannabinoids can preferentially impair, memory for emotional events in humans. Although addictive drugs do not appear to positively bias memory, the possibility remains that these drugs’ effects on emotional memory could influence drug use among certain individuals.

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Enhanced selective memory consolidation following post-learning pleasant and aversive arousal

Cited by 71 publications

References 58 publications

Enhanced post-learning memory consolidation is influenced by arousal predisposition and emotion regulation but not by stimulus valence or arousal

Enhanced post-learning memory consolidation is influenced by arousal predisposition and emotion regulation but not by stimulus valence or arousal

Exercise and the Brain: Neurogenesis, Synaptic Plasticity, Spine Density, and Angiogenesis

Pre-encoding administration of amphetamine or THC preferentially modulates emotional memory in humans

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