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Related Experiment Videos

Two phylogenetic specializations in the human brain.

John Allman1, Atiya Hakeem, Karli Watson

  • 1Division of Biology, California Institute of Technology, Pasadena, California 91125, USA. cebus@caltech.edu

The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry
|August 27, 2002
PubMed
Summary

Brain specializations in humans and apes, including frontal polar cortex (area 10) and anterior cingulate cortex spindle neurons, are key to adaptive responses and intelligence. These likely aided human evolution and intergenerational knowledge transfer.

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Brain, behavior and evolution·2003

Area of Science:

  • Neuroscience
  • Evolutionary Biology
  • Cognitive Science

Background:

  • Apes and humans possess unique brain specializations.
  • Frontal polar cortex (Brodmann's area 10) and anterior cingulate cortex spindle neurons are key areas of interest.

Purpose of the Study:

  • To examine two specific brain specializations in apes and humans.
  • To explore their role in adaptive responses, self-control, and intelligence.
  • To hypothesize their contribution to human evolutionary uniqueness.

Main Methods:

  • Comparative neuroanatomy of apes and humans.
  • Functional neuroanatomy linking brain regions and behaviors.
  • Evolutionary developmental biology perspective.

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Main Results:

  • Spindle neurons in the anterior cingulate cortex may relay processing outcomes, particularly error recognition, to area 10.
  • Area 10 is involved in memory retrieval and planning adaptive responses.
  • These neurobehavioral specializations are proposed as crucial for intelligence.

Conclusions:

  • The studied brain specializations are fundamental to the capacity for adaptive responses.
  • These features likely played a role in the evolution of human intelligence and social behaviors.
  • Hypothesized role in the intergenerational transfer of food and information in human societies.