Cited by 157Memory Processes and InfluencesMemory and Neural MechanismsIdentity, Memory, and Therapy

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Differential contributions of hippocampus and medial prefrontal cortex to self-projection and self-referential processing

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Abstract

Converging evidence points to a neural network that supports a range of abilities including remembering the past, thinking about the future, and introspecting about oneself and others. Neuroimaging studies find hippocampal activation during event construction tasks, and patients with hippocampal amnesia are impaired in their ability to (re)construct events of the past and the future. Neuroimaging studies of constructed experiences similarly implicate the medial prefrontal cortex (mPFC), but it remains unknown whether the mPFC is critical for such processes. The current study compares performance of five patients with bilateral mPFC damage, six patients with bilateral hippocampal damage, and demographically matched comparison participants on an event construction task. Participants were given a neutral cue word and asked to (re)construct events across four time conditions: real past, imagined past, imagined present, and future. These event narratives were analyzed for the number of internal and external details to quantify the extent of episodic (re)experiencing. Given the literature on the involvement of the mPFC in self-referential processing, we also analyzed the event narratives for self-references. The patients with mPFC damage did not differ from healthy comparison participants in their ability to construct highly detailed episodic events across time periods but displayed disruptions in their incorporation of the self. Patients with hippocampal damage showed the opposite pattern; they were impaired in their ability to construct highly detailed episodic events across time periods but not in their incorporation of the self. The results suggest differential contributions of hippocampus and medial prefrontal cortex to the distributed neural network for various forms of self-projection.

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Crossref · 10.1016/j.neuropsychologia.2015.05.002

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Metadata

Authors
Kurczek, J., Wechsler, E., Ahuja, S., Jensen, U., Cohen, N. J., Tranel, D., & Duff, M.
Affiliations
  • University of Iowa (US)
  • Thomson Reuters (United States) (US)
  • University of Illinois Urbana-Champaign (US)
Corresponding author
Duff, Melissa
Venue
Neuropsychologia
Publisher
Elsevier BV
Published
2015-07
Volume
73
Pages
116-126
ISSN
0028-3932 (ISSN-L)
OpenAlex
W312441591
Cited by
157
References
116
Citations by year
2026: 5 · 2025: 11 · 2024: 8 · 2023: 8 · 2022: 12 · 2021: 18 · 2020: 21 · 2019: 16 · 2018: 23 · 2017: 17 · 2016: 14 · 2015: 4
FWCI
11.63
Type
journal article
Language
en
Open access
Locations
  • Neuropsychologia (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIDCD (F32 DC008825)
  • NIMH (RO1 MH062500)
  • NINDS (P01 NS19632)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Developmental and Educational Psychology › Identity, Memory, and Therapy
Keywords
self-projection, self-referential processing, hippocampus, medial prefrontal cortex, medial temporal lobe, event construction, episodic memory, self-referential language, hippocampal amnesia
MeSH terms
Aged, Female, Hippocampus, Humans, Imagination, Magnetic Resonance Imaging, Male, Middle Aged, Neural Pathways, Neuropsychological Tests, Self Concept, Thinking, Prefrontal Cortex, Memory, Episodic

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