Cited by 37Memory and Neural MechanismsFunctional Brain Connectivity StudiesMemory Processes and Influences

Adaptive contextualization: a new role for the default mode network in affective learning

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Marstaller, Lars, Burianová, Hana, Reutens, David C.·2017·Human Brain Mapping

Abstract

Safety learning describes the ability to learn that certain cues predict the absence of a dangerous or threatening event. Although incidental observations of activity within the default mode network (DMN) during the processing of safety cues have been reported previously, there is as yet no evidence demonstrating that the DMN plays a functional rather than a corollary role in safety learning. Using functional magnetic resonance imaging and a Pavlovian fear conditioning and extinction paradigm, we investigated the neural correlates of danger and safety learning. Our results provide evidence for a functional role of the DMN by showing that (i) the DMN is activated by safety but not danger cues, (ii) the DMN is anti-correlated with a fear-processing network, and (iii) DMN activation increases with safety learning. Based on our results, we formulate a novel proposal, arguing that activity within the DMN supports the contextualization of safety memories, constrains the generalization of fear, and supports adaptive fear learning. Our findings have important implications for our understanding of affective and stress disorders, which are characterized by aberrant DMN activity, as they suggest that therapies targeting the DMN through mindfulness practice or brain stimulation might help prevent pathological over-generalization of fear associations. Hum Brain Mapp 38:1082-1091, 2017. © 2016 Wiley Periodicals, Inc.

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  • There is still a consensus that the amygdala, hippocampus, vmPFC, and ACC are central to fear learning and, especially, fear extinction.

    “there is still a consensus that the Am, Hip, vmPFC, and ACC are central to fear learning [review in Ref. (193, 194)] and, especially, fear extinction [reviews in Ref. (187, 188, 195)].”

    From The Stress Acceleration Hypothesis of Nightmares (2017) · cites this paper as [188]

    The Introduction describes the vmPFC’s role in extinction and its inhibition of amygdala fear responses. The Results report vmPFC, hippocampal, and subgenual ACC activity during safety cues in extinction, while dorsal ACC activity was associated with danger cues. This empirical study supports roles for the named regions, but does not establish a consensus or serve as the review the citing sentence calls it. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The fear extinction function proposed by the NM-AND model to occur during sleep is similar in some respects to the affective contextualization function proposed for the default mode network, which partially overlaps (vmPFC, ACC) the NM-AND network and which may also be active during dreaming.

    “The fear extinction function proposed by the NM-AND model to occur during sleep is similar in some respects to the affective contextualization function proposed for the default mode network (188), which partially overlaps (vmPFC, ACC) the NM-AND network and which, intriguingly, may also be active during dreaming (189–192).”

    From The Stress Acceleration Hypothesis of Nightmares (2017) · cites this paper as [188]

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Authors
Marstaller, L., Burianová, H., & Reutens, D. C.
Affiliations
The University of Queensland (AU)
Corresponding author
Marstaller, Lars
Venue
Human Brain Mapping
Publisher
Wiley
Published
2016-10-21
Volume
38
Issue
2
Pages
1082-1091
ISSN
  • 1065-9471 (ISSN-L)
  • 1097-0193
OpenAlex
W2537942565
Cited by
37
References
88
Citations by year
2026: 2 · 2024: 6 · 2023: 4 · 2022: 1 · 2021: 7 · 2020: 5 · 2019: 5 · 2018: 4 · 2017: 3
FWCI
2.54
Type
journal article
Language
en
Open access
Locations
  • Human Brain Mapping (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Bournemouth University Research Online (Bournemouth University) (submittedVersion)
Funders
Australian Research Council (SR120300015)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
default mode network, safety learning, fear extinction, fear conditioning, fear generalization, affective learning, stress disorders, mindfulness, brain stimulation
MeSH terms
Adult, Brain, Conditioning, Psychological, Fear, Female, Galvanic Skin Response, Generalization, Psychological, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Models, Neurological, Reaction Time, Reinforcement, Psychology, Young Adult

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