Topography of the uncinate fascicle and adjacent temporal fiber tracts
Abstract
Neurosurgical procedures in the anterior temporal lobe are common, in which different postoperative neuropsychological deficits may occur. For the refinement of the surgical approach 10 human hemispheres were dissected using the method of dissection by Klinger, to gain more data about the fiber tracts in the anterior temporal lobe, respectively the temporal stem. The uncinate fascicle has a form like a curved dumb-bell with a thin (about 2 mm thick), fan-like arrangement of fibers in the frontal and temporal lobe. The solid portion runs in the extreme and external capsule through the limen insulae. The topography of adjacent important fiber tracts (inferior occipito-frontal fascicle, Meyer's loop, anterior commissure, inferior thalamic bundle) could be displayed. According to the results possible neuropsychological deficits and surgical considerations are discussed.
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The consensus on the UF is that it connects, along with the fronto-orbital and temporo-polar cortices, ventral temporal areas.
“The consensus on the UF is that it connects, along with the fronto-orbital and temporo-polar cortices, ventral temporal areas (Ebeling and von Cramon, 1992; Catani and Thiebaut de Schotten, 2008).”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon, 1992
Previous dissection studies have noted that the distinction between IFOF and UF is difficult due to intermingling of their fibers.
“Previous dissection studies have noted that the distinction between these two tracts is difficult due to the intermingling of their fibers (Ebeling and von Cramon, 1992; Kier et al., 2004).”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon, 1992
In this study, the UF stem was situated significantly ventrally, posteriorly, and laterally to the IFOF stem.
“This was confirmed in this study with the UF stem situated significantly ventrally, posteriorly and laterally to the IFOF stem (Figure 4)”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon, 1992
Posterior UF terminations were predominantly observed within the temporal pole, followed by the superior and middle temporal gyri, and then by fusiform and entorhinal gyri.
“Posterior UF terminations were predominantly observed within the temporal pole consistent with Ebeling and von Cramon (1992), followed by the superior and middle temporal gyri, and then by fusiform and entorhinal gyri.”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon (1992)
The study did not observe any projection to the cingulate gyrus or to the amygdala.
“We did not observe any projection to the cingulate gyrus, neither to the amygdala”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon, 1992
The study confirmed anterior UF terminations mainly within the medial and lateral orbito-frontal areas, and minor branches in the middle and inferior frontal and rectus gyri.
“We confirmed anterior UF terminations mainly within the medial and lateral orbito-frontal areas, and minor branches in the middle and inferior frontal and rectus gyri consistent with dissection and tractography studies”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon, 1992
Projections to the nuclei of the amygdala reported in Ebeling and von Cramon (1992) refer to the entorhinal cortex and should not be mistaken for the amygdala proper.
“Importantly, projections to the nuclei of the amygdala reported in Ebeling and von Cramon (1992) refers to the entorhinal cortex and should not be mistaken for the amygdala proper as is often done (Schmahmann and Pandya, 2006; Kim and Whalen, 2009).”
From Cortical Terminations of the Inferior Fronto-Occipital and Uncinate Fasciculi: Anatomical Stem-Based Virtual Dissection (2016) · cites this paper as Ebeling and von Cramon (1992)
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References 42 · Cited by 300
- Authors
- Ebeling, U., & Cramon, D. V.
- Affiliations
- University of Bern (CH)
- München Klinik Bogenhausen (DE)
- Venue
- Acta Neurochirurgica
- Published
- 1992-09
- Volume
- 115
- Issue
- 3-4
- Pages
- 143-148
- ISSN
- 0001-6268 (ISSN-L)
- 0942-0940
- OpenAlex
- W1968195255
- Cited by
- 300
- References
- 42
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 1 · 2023: 11 · 2022: 9 · 2021: 8 · 2020: 13 · 2019: 11 · 2018: 9 · 2017: 12 · 2016: 15 · 2015: 16 · 2014: 14 · 2013: 19 · 2012: 21
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Acta Neurochirurgica (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
- Health Sciences › Medicine › Anatomy › Medical and Biological Sciences
- Physical Sciences › Engineering › Biomedical Engineering › Anatomy and Medical Technology
- Keywords
- anterior temporal lobe, Meyer's loop, anterior commissure, surgical approach
- MeSH terms
- Adult, Brain Mapping, Cerebral Cortex, Female, Humans, Male, Nerve Fibers, Neural Pathways, Psychosurgery, Temporal Lobe
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