Evolution of the brain and intelligence

@article{Roth2005EvolutionOT,
  title={Evolution of the brain and intelligence},
  author={Gerhard Roth and Ursula Dicke},
  journal={Trends in Cognitive Sciences},
  year={2005},
  volume={9},
  pages={250-257}
}
  • G. Roth, U. Dicke
  • Published 1 May 2005
  • Biology, Psychology
  • Trends in Cognitive Sciences

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References

SHOWING 1-10 OF 86 REFERENCES
Convergence of Complex Cognitive Abilities in Cetaceans and Primates
  • L. Marino
  • Biology, Psychology
    Brain, Behavior and Evolution
  • 2002
TLDR
Evidence that convergent intelligence has occurred in two distantly related mammalian taxa is provided and these findings have important implications for understanding the generality and specificity of those processes that underlie cognition in different species and the nature of the evolution of intelligence.
Humans and great apes share a large frontal cortex
TLDR
It is suggested that the special cognitive abilities attributed to a frontal advantage may be due to differences in individual cortical areas and to a richer interconnectivity, none of which required an increase in the overall relative size of the frontal lobe during hominid evolution.
The Pyramidal Cell in Cognition: A Comparative Study in Human and Monkey
TLDR
The results suggest that highly spinous, compartmentalized, pyramidal cells (and the circuits they form) are required to perform complex cortical functions such as comprehension, perception, and planning.
Evolution of Human Intelligence: The Roles of Brain Size and Mental Construction
  • K. Gibson
  • Psychology, Biology
    Brain, Behavior and Evolution
  • 2002
TLDR
A continuity model is presented that suggests that expanded human mental capacities primarily reflect the increased information processing capacities of the enlarged human brain including the enlarged neocortex, cerebellum, and basal ganglia.
Linked regularities in the development and evolution of mammalian brains.
Analysis of data collected on 131 species of primates, bats, and insectivores showed that the sizes of brain components, from medulla to forebrain, are highly predictable from absolute brain size by
A neuronal morphologic type unique to humans and great apes.
TLDR
The existence and distribution of an unusual type of projection neuron, a large, spindle-shaped cell, in layer Vb of the anterior cingulate cortex of pongids and hominids is reported, which suggests some of the differential neuronal susceptibility that occurs in the human brain in the course of age-related dementing illnesses may have appeared only recently during primate evolution.
A universal scaling law between gray matter and white matter of cerebral cortex.
  • K. Zhang, T. Sejnowski
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2000
TLDR
The predicted power law with an exponent of 4/3 minus a small correction for the thickness of the cortex accurately accounts for empirical data spanning several orders of magnitude in brain sizes for various mammalian species, including human and nonhuman primates.
Brain sizes, surfaces, and neuronal sizes of the cortex cerebri: a stereological investigation of man and his variability and a comparison with some mammals (primates, whales, marsupials, insectivores, and one elephant).
  • H. Haug
  • Biology
    The American journal of anatomy
  • 1987
TLDR
The results show that there is a high correlation to brain size for nearly all macroscopic values, and the assumption that the number of cortical neurons beneath a given surface area of cortex is the same in all mammals cannot be verified.
Brain Evolution and Cognition
TLDR
This chapter discusses the evolution and Complexity of the Human Brain: Some Organizing Principles, the Evolution of Neural and Behavioral Complexity, and Cognition in Vertebrates.
Neocortex size as a constraint on group size in primates
...
...