Cited by 69Face Recognition and PerceptionFunctional Brain Connectivity StudiesNeural and Behavioral Psychology Studies

Functional connectivity between the amygdala and prefrontal cortex underlies processing of emotion ambiguity

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Sun, Sai, Yu, Hongbo, Yu, Rongjun, Wang, Shuo·2023·Translational Psychiatry

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Abstract

Processing facial expressions of emotion draws on a distributed brain network. In particular, judging ambiguous facial emotions involves coordination between multiple brain areas. Here, we applied multimodal functional connectivity analysis to achieve network-level understanding of the neural mechanisms underlying perceptual ambiguity in facial expressions. We found directional effective connectivity between the amygdala, dorsomedial prefrontal cortex (dmPFC), and ventromedial PFC, supporting both bottom-up affective processes for ambiguity representation/perception and top-down cognitive processes for ambiguity resolution/decision. Direct recordings from the human neurosurgical patients showed that the responses of amygdala and dmPFC neurons were modulated by the level of emotion ambiguity, and amygdala neurons responded earlier than dmPFC neurons, reflecting the bottom-up process for ambiguity processing. We further found parietal-frontal coherence and delta-alpha cross-frequency coupling involved in encoding emotion ambiguity. We replicated the EEG coherence result using independent experiments and further showed modulation of the coherence. EEG source connectivity revealed that the dmPFC top-down regulated the activities in other brain regions. Lastly, we showed altered behavioral responses in neuropsychiatric patients who may have dysfunctions in amygdala-PFC functional connectivity. Together, using multimodal experimental and analytical approaches, we have delineated a neural network that underlies processing of emotion ambiguity.

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  • Individuals with insomnia show moderately increased cortisol levels, with the greatest elevations in the evening and first half of the night.

    “Meta-analytic evidence confirms that individuals with insomnia show moderately increased cortisol levels, with the greatest elevations observed in the evening and first half of the night, precisely when sleep initiation should occur [23,24].”

    From Pre-Sleep Anxiety: Mechanisms and Therapeutic Approaches in Clinical Practice. (2026) · cites this paper as [23]

    The Methods (Participants) and Results (Behavioral deficits in neuropsychiatric patients) passages concern emotion judgments and neuropsychiatric groups, not insomnia or cortisol. Searches for insomnia, cortisol, evening elevations, and sleep initiation found no passage addressing the claim in our copy. (LLM, conf=0.78)

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  1. [87]Friston KJ Buechel C Fink GR Morris J Rolls E Dolan RJ Psychophysiological and modulatory interactions in neuroimaging Neuroimage 1997 6 218 29 10.1006/nimg.1997.0291 9344826 · DOI · Paper page

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Authors
Sun, S., Yu, H., Yu, R., & Wang, S.
Affiliations
  • Tohoku University (JP)
  • University of California, Santa Barbara (US)
  • Hong Kong Baptist University (HK)
  • Washington University in St. Louis (US)
Corresponding author
  • Sun, Sai
  • Wang, Shuo
Venue
Translational Psychiatry
Published
2023-10-28
Volume
13
Issue
1
Pages
334-334
ISSN
2158-3188 (ISSN-L)
OpenAlex
W4388001312
Cited by
69
References
97
Citations by year
2026: 29 · 2025: 26 · 2024: 9 · 2023: 5
FWCI
10.33
Type
journal article
Language
en
Open access
Locations
  • Translational Psychiatry (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • PubMed Central (submittedVersion)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Science Foundation (2114644, 1945230)
  • National Institutes of Health
  • Japan Society for the Promotion of Science (22K15626, 56045092, 56045090)
  • National Institute of Mental Health (R01MH129426)
  • Air Force Office of Scientific Research (FA9550-, -21-1-, FA9550-21-1-0088)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
facial emotion recognition, amygdala, dorsomedial prefrontal cortex, ventromedial prefrontal cortex, effective connectivity, bottom-up processing, top-down control, EEG coherence, single-unit recording, neuropsychiatric patients

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