Cited by 580Memory and Neural MechanismsNeuroscience and Music PerceptionNeural and Behavioral Psychology Studies

The insular cortex

Nieuwenhuys, Rudolf·2012·Progress in Brain Research

Abstract

The human insular cortex forms a distinct, but entirely hidden lobe, situated in the depth of the Sylvian fissure. Here, we first review the recent literature on the connectivity and the functions of this structure. It appears that this small lobe, taking up less than 2% of the total cortical surface area, receives afferents from some sensory thalamic nuclei, is (mostly reciprocally) connected with the amygdala and with many limbic and association cortical areas, and is implicated in an astonishingly large number of widely different functions, ranging from pain perception and speech production to the processing of social emotions. Next, we embark on a long, adventurous journey through the voluminous literature on the structural organization of the insular cortex. This journey yielded the following take-home messages: (1) The meticulous, but mostly neglected publications of Rose (1928) and Brockhaus (1940) are still invaluable for our understanding of the architecture of the mammalian insular cortex. (2) The relation of the insular cortex to the adjacent claustrum is neither ontogenetical nor functional, but purely topographical. (3) The insular cortex has passed through a spectacular progressive differentiation during hominoid evolution, but the assumption of Craig (2009) that the human anterior insula has no homologue in the rhesus monkey is untenable. (4) The concept of Mesulam and Mufson (1985), that the primate insula is essentially composed of three concentrically arranged zones, agranular, dysgranular, and granular, is presumably correct, but there is at present much confusion concerning the more detailed architecture of the anterior insular cortex. (5) The large spindle-shaped cells in the fifth layer of the insular cortex, currently known as von Economo neurons (VENs), are not only confined to large-brained mammals, such as whales, elephants, apes, and humans, but also occur in monkeys and prosimians, as well as in the pygmy hippopotamus, the Atlantic walrus, and Florida manatee. Finally, we point out that the human insula presents a unique opportunity for performing an in-depth comparative analysis of the relations between structure and function in a typical sensory and a typical cognitive cortical domain.

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Crossref · 10.1016/b978-0-444-53860-4.00007-6

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Authors
Nieuwenhuys, R.
Affiliations
Netherlands Institute for Neuroscience (NL)
Corresponding author
Nieuwenhuys, Rudolf
Venue
Progress in Brain Research
Publisher
Elsevier
Published
2012
Volume
195
Pages
123-163
ISSN
0079-6123 (ISSN-L)
OpenAlex
W2240767875
Cited by
580
References
106
Citations by year
2026: 19 · 2025: 37 · 2024: 44 · 2023: 40 · 2022: 61 · 2021: 52 · 2020: 48 · 2019: 41 · 2018: 52 · 2017: 38 · 2016: 47 · 2015: 31 · 2014: 29 · 2013: 30 · 2012: 8
FWCI
60.18
Type
book chapter
Language
en
Open access
closed
Locations
  • Progress in brain research (publishedVersion)
  • PubMed (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • KNAW Research Portal (The Royal Netherlands Academy of Arts and Sciences) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
insula, anterior insula, amygdala, thalamic afferents, pain perception, speech production, claustrum, hominoid evolution, von Economo neurons, comparative neuroanatomy
MeSH terms
Animals, Cerebral Cortex, Humans, Neural Pathways, Neurons

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