Cited by 440Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Cortex, Cognition and the Cell: New Insights into the Pyramidal Neuron and Prefrontal Function

Elston, G. N.·2003·Cerebral Cortex

Abstract

Arguably the most complex cortical functions are seated in human cognition, the how and why of which have been debated for centuries by theologians, philosophers and scientists alike. In his best-selling book, An Astonishing Hypothesis: A Scientific Search for the Soul, Francis Crick refined the view that these qualities are determined solely by cortical cells and circuitry. Put simply, cognition is nothing more, or less, than a biological function. Accepting this to be the case, it should be possible to identify the mechanisms that subserve cognitive processing. Since the pioneering studies of Lorent de Nó and Hebb, and the more recent studies of Fuster, Miller and Goldman-Rakic, to mention but a few, much attention has been focused on the role of persistent neural activity in cognitive processes. Application of modern technologies and modelling techniques has led to new hypotheses about the mechanisms of persistent activity. Here I focus on how regional variations in the pyramidal cell phenotype may determine the complexity of cortical circuitry and, in turn, influence neural activity. Data obtained from thousands of individually injected pyramidal cells in sensory, motor, association and executive cortex reveal marked differences in the numbers of putative excitatory inputs received by these cells. Pyramidal cells in prefrontal cortex have, on average, up to 23 times more dendritic spines than those in the primary visual area. I propose that without these specializations in the structure of pyramidal cells, and the circuits they form, human cognitive processing would not have evolved to its present state. I also present data from both New World and Old World monkeys that show varying degrees of complexity in the pyramidal cell phenotype in their prefrontal cortices, suggesting that cortical circuitry and, thus, cognitive styles are evolving independently in different species.

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Crossref · 10.1093/cercor/bhg093

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Authors
Elston, G. N.
Affiliations
The University of Queensland (AU)
Corresponding author
Elston, G. N.
Venue
Cerebral Cortex
Published
2003-11-01
Volume
13
Issue
11
Pages
1124-1138
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2149476775
Cited by
440
References
196
Citations by year
2026: 23 · 2025: 18 · 2024: 17 · 2023: 23 · 2022: 15 · 2021: 25 · 2020: 25 · 2019: 32 · 2018: 30 · 2017: 24 · 2016: 35 · 2015: 15 · 2014: 20 · 2013: 13 · 2012: 18
FWCI
5.08
Type
journal article
Language
en
Open access
closed
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed (publishedVersion)
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 › Memory and Neural Mechanisms
Keywords
pyramidal neurons, prefrontal cortex, persistent activity, dendritic spines, cortical circuits, cognitive processes, excitatory synaptic input, primary visual cortex, primate evolution, cognitive style
MeSH terms
Animals, Cognition, Humans, Nerve Net, Neurons, Phenotype, Prefrontal Cortex, Pyramidal Cells

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