Cited by 236Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionFunctional Brain Connectivity Studies

Organization of the Human Inferior Parietal Lobule Based on Receptor Architectonics

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Caspers, Svenja, Schleicher, Axel, Bacha-Trams, Mareike, Palomero-Gallagher, Nicola, Amunts, Katrin, Zilles, Karl·2013·Cerebral Cortex

Abstract

Human inferior parietal lobule (IPL) plays a key role in various cognitive functions. Its functional diversity, including attention, language, and action processing, is reflected by its structural segregation into 7 cytoarchitectonically distinct areas, each with characteristic connectivity patterns. We hypothesized that commonalities of the cytoarchitectonic, connectional, and functional diversity of the IPL should be reflected by a correlated transmitter receptor-based organization. Since the function of a cortical area requires a well-tuned receptor balance, the densities of 15 different receptors were measured in each IPL area. A hierarchical cluster analysis of the receptor balance revealed a tripartite segregation of the IPL into a rostral, middle, and caudal group. Comparison with other cortical areas showed strong similarities with Broca's region for all 3 groups, with the superior parietal cortex for the middle, and with extrastriate visual areas for the caudal group. Notably, caudal-most area PGp has a receptor fingerprint very similar to that of ventral extrastriate visual cortex. We therefore propose a new organizational model of the human IPL, consisting of 3 clusters, which corresponds to its known cytoarchitectonic, connectional, and functional diversity at the molecular level. This might reflect a general organizational principle of human IPL, beyond specific functional domains.

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Authors
Caspers, S., Schleicher, A., Bacha-Trams, M., Palomero-Gallagher, N., Amunts, K., & Zilles, K.
Affiliations
  • Forschungszentrum Jülich (DE)
  • Heinrich Heine University Düsseldorf (DE)
Corresponding author
Caspers, Svenja
Venue
Cerebral Cortex
Published
2012-02-28
Volume
23
Issue
3
Pages
615-628
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2099052030
Cited by
236
References
84
Citations by year
2026: 9 · 2025: 16 · 2024: 13 · 2023: 16 · 2022: 24 · 2021: 13 · 2020: 13 · 2019: 13 · 2018: 21 · 2017: 26 · 2016: 21 · 2015: 21 · 2014: 10 · 2013: 13 · 2012: 6
FWCI
6.59
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Cerebral Cortex (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
  • Max Planck Digital Library (submittedVersion, other-oa)
  • JuSER (Forschungszentrum Jülich) (submittedVersion, other-oa)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
inferior parietal lobule, receptor structure, neurotransmitter receptors, cytoarchitecture, cortical organization, Broca's area, superior parietal cortex, extrastriate cortex, posterior parietal cortex, functional segregation
MeSH terms
Aged, Autoradiography, Brain Mapping, Female, Humans, Male, Parietal Lobe, Cluster Analysis, Receptors, Neurotransmitter

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