Cited by 829Advanced Neuroimaging Techniques and ApplicationsNeural and Behavioral Psychology StudiesMemory and Neural Mechanisms

Dissecting the uncinate fasciculus: disorders, controversies and a hypothesis.

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Von Der Heide, Rebecca J., Skipper, Laura M., Klobusicky, Elizabeth, Olson, Ingrid R.·2013·Brain

Abstract

The uncinate fasciculus is a bidirectional, long-range white matter tract that connects lateral orbitofrontal cortex and Brodmann area 10 with the anterior temporal lobes. Although abnormalities in the uncinate fasciculus have been associated with several psychiatric disorders and previous studies suggest it plays a putative role in episodic memory, language and social emotional processing, its exact function is not well understood. In this review we summarize what is currently known about the anatomy of the uncinate, we review its role in psychiatric and neurological illnesses, and we evaluate evidence related to its putative functions. We propose that an overarching role of the uncinate fasciculus is to allow temporal lobe-based mnemonic associations (e.g. an individual's name + face + voice) to modify behaviour through interactions with the lateral orbitofrontal cortex, which provides valence-based biasing of decisions. The bidirectionality of the uncinate fasciculus information flow allows orbital frontal cortex-based reward and punishment history to rapidly modulate temporal lobe-based mnemonic representations. According to this view, disruption of the uncinate may cause problems in the expression of memory to guide decisions and in the acquisition of certain types of learning and memory. Moreover, uncinate perturbation should cause problems that extend beyond memory to include social-emotional problems owing to people and objects being stripped of personal value and emo…

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Crossref · 10.1093/brain/awt094

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Authors
Von Der Heide, R. J., Skipper, L. M., Klobusicky, E., & Olson, I. R.
Affiliations
Temple University (US)
Venue
Brain
Published
2013-05-06
Volume
136
Issue
6
Pages
1692-1707
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2084335923
Cited by
829
References
18
Citations by year
2026: 53 · 2025: 72 · 2024: 77 · 2023: 52 · 2022: 71 · 2021: 71 · 2020: 82 · 2019: 69 · 2018: 64 · 2017: 63 · 2016: 66 · 2015: 53 · 2014: 24 · 2013: 8 · 2012: 1
FWCI
7.15
Type
journal article
Language
en
Open access
Locations
  • Brain (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (R01MH091113)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
uncinate fasciculus, white matter tracts, orbitofrontal cortex, Brodmann area 10, anterior temporal lobe, episodic memory, memory-guided decision-making, social-emotional processing, mental illness, neurological disorders, functional hypothesis
MeSH terms
Animals, Mental Disorders, Humans, Nerve Fibers, Myelinated, Nerve Net, Neural Pathways, Temporal Lobe

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