Cited by 439Anatomy and Medical TechnologyMedical and Biological SciencesHistory of Medical Practice

Topographic anatomy of the insular region

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Türe, Uğur, Yaşargil, Dianne C. H., Al-Mefty, Ossama, Yaşargil, M. Gazi·1999·Journal of Neurosurgery

Abstract

Object. The insula is one of the paralimbic structures and constitutes the invaginated portion of the cerebral cortex, forming the base of the sylvian fissure. The authors provide a detailed anatomical study of the insular region to assist in the process of conceptualizing a reliable surgical approach to allow for a successful course of surgery. Methods. The topographic anatomy of the insular region was studied in 25 formalin-fixed brain specimens (50 hemispheres). The periinsular sulci (anterior, superior, and inferior) define the limits of the frontoorbital, frontoparietal, and temporal opercula, respectively. The opercula cover and enclose the insula. The limen insula is located in the depths of the sylvian fissure and constitutes the anterobasal portion of the insula. A central insular sulcus divides the insula into two portions, the anterior insula (larger) and the posterior insula (smaller). The anterior insula is composed of three principal short insular gyri (anterior, middle, and posterior) as well as the accessory and transverse insular gyri. All five gyri converge at the insular apex, which represents the most superficial aspect of the insula. The posterior insula is composed of the anterior and posterior long insular gyri and the postcentral insular sulcus, which separates them. The anterior insula was found to be connected exclusively to the frontal lobe, whereas the posterior insula was connected to both the parietal and temporal lobes. Opercular gyri and sulci were observed to interdigitate within the opercula and to interdigitate the gyri and sulci of the insula. Using the fiber dissection technique, various unique anatomical features and relationships of the insula were determined. Conclusions. The topographic anatomy of the insular region is described in this article, and a practical terminology for gyral and sulcal patterns of surgical significance is presented. This study clarifies and supplements the information presently available to help develop a more coherent surgical concept.

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Crossref · 10.3171/jns.1999.90.4.0720

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  • The insula is implicated in diverse functions relevant to adolescent decision making, including attention, sexual attraction or romance, language, social experiences, and motivation or reward.

    “yet it is implicated in a markedly diverse range of functions that are relevant to current theories of adolescent decision making, such as attention [7], sexual attraction/romance [29], language [30], social experiences [31] and motivation/reward [8], among others [for review, see 32].”

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Authors
Türe, U., Yaşargil, D. C. H., Al-Mefty, O., & Yaşargil, M. G.
Affiliations
University of Arkansas for Medical Sciences (US)
Venue
Journal of Neurosurgery
Published
1999-04
Volume
90
Issue
4
Pages
720-733
ISSN
0022-3085 (ISSN-L)
OpenAlex
W2118248825
Cited by
439
References
35
Citations by year
2026: 18 · 2025: 22 · 2024: 20 · 2023: 21 · 2022: 18 · 2021: 20 · 2020: 33 · 2019: 24 · 2018: 21 · 2017: 18 · 2016: 16 · 2015: 20 · 2014: 9 · 2013: 13 · 2012: 17
FWCI
5.70
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Journal of neurosurgery (publishedVersion)
  • PubMed (publishedVersion)
  • Dspace Repository (Marmara Üniversitesi) (submittedVersion)
  • Dspace Repository (Marmara Üniversitesi) (submittedVersion, other-oa)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Anatomy and Medical Technology
  • Health Sciences › Medicine › Anatomy › Medical and Biological Sciences
  • Health Sciences › Medicine › Neurology › History of Medical Practice
Keywords
insula, topographic anatomy, Sylvian fissure, anterior insula, posterior insula, surgical approach
MeSH terms
Adult, Basal Ganglia, Cadaver, Cerebral Cortex, Cerebral Ventricles, Frontal Lobe, Gyrus Cinguli, Humans, Limbic System, Terminology as Topic, Parietal Lobe, Temporal Lobe, Reproducibility of Results

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