Cited by 23Dementia and Cognitive Impairment ResearchAdvanced Neuroimaging Techniques and ApplicationsNeural and Behavioral Psychology Studies

Right uncinate fasciculus supports socioemotional sensitivity in health and neurodegenerative disease

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Toller, Gianina, Mandelli, Maria Luisa, Cobigo, Yann, Rosen, Howard J., Kramer, Joel H., Miller, Bruce L., Gorno-Tempini, Maria Luisa, Rankin, Katherine P.·2022·NeuroImage: Clinical

Abstract

The uncinate fasciculus (UF) connects fronto-insular and temporal gray matter regions involved in visceral emotional reactivity and semantic appraisal, but the precise role of this tract in socioemotional functioning is not well-understood. Using the Revised-Self Monitoring (RSMS) informant questionnaire, we examined whether fractional anisotropy (FA) in the right UF corresponded to socioemotional sensitivity during face-to-face interactions in 145 individuals (40 healthy older adults [NC], and 105 patients with frontotemporal lobar degeneration [FTLD] syndromes in whom this tract is selectively vulnerable, including 31 behavioral variant frontotemporal dementia [bvFTD], 39 semantic variant primary progressive aphasia [svPPA], and 35 nonfluent variant primary progressive aphasia [nfvPPA]). Voxelwise and region-of-interest-based DWI analyses revealed that FA in the right but not left UF significantly predicted RSMS score in the full sample, and in NC and svPPA subgroups alone. Right UF integrity did not predict RSMS score in the bvFTD group, but gray matter volume in the right orbitofrontal cortex adjacent to the UF was a significant predictor. Our results suggest that better socioemotional sensitivity is specifically supported by right UF white matter, highlighting a key neuro-affective relationship found in both healthy aging and neurologically affected individuals. The finding that poorer socioemotional sensitivity corresponded to right UF damage in svPPA but was more robustly influenced by gray matter atrophy adjacent to the UF in bvFTD may have important implications for endpoint selection in clinical trial design for patients with FTLD.

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Authors
Toller, G., Mandelli, M. L., Cobigo, Y., Rosen, H. J., Kramer, J. H., Miller, B. L., Gorno-Tempini, M. L., & Rankin, K. P.
Affiliations
University of California, San Francisco (US)
Corresponding author
Toller, Gianina
Venue
NeuroImage: Clinical
Publisher
Elsevier BV
Published
2022
Volume
34
Pages
102994
ISSN
2213-1582 (ISSN-L)
OpenAlex
W4220669537
Cited by
23
References
78
Citations by year
2026: 5 · 2025: 8 · 2024: 7 · 2023: 1 · 2022: 2
FWCI
2.93
Type
journal article
Language
en
Open access
Locations
  • NeuroImage Clinical (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • National Institutes of Health (2002/2J, 2014-A-004-NET)
  • Larry L. Hillblom Foundation (P2ZHP1_165073)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
uncinate fasciculus, frontotemporal lobar degeneration, behavioral variant frontotemporal dementia, semantic dementia, white matter integrity, fractional anisotropy, orbitofrontal cortex, gray matter atrophy, healthy aging, face-to-face social interaction, clinical trial endpoints
MeSH terms
Uncinate Fasciculus, Aged, Humans, Neurodegenerative Diseases, Frontotemporal Lobar Degeneration, Primary Progressive Nonfluent Aphasia, Frontotemporal Dementia, White Matter

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