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Multi-species Conserved Sequences02:51

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Knowing What Counts: Unbiased Stereology in the Non-human Primate Brain
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Conserved Sequence Processing in Primate Frontal Cortex.

Benjamin Wilson1, William D Marslen-Wilson2, Christopher I Petkov1

  • 1Institute of Neuroscience, Henry Wellcome Building, Newcastle University, Framlington Place, Newcastle upon Tyne, UK; Centre for Behaviour and Evolution, Henry Wellcome Building, Newcastle University, Framlington Place, Newcastle upon Tyne, UK.

Trends in Neurosciences
|January 9, 2017
PubMed
Summary
This summary is machine-generated.

Humans and primates share brain mechanisms for processing event sequences, crucial for understanding language origins. A new model links frontal cortex activity to sequencing complexity across species.

Keywords:
cognitionevolutionhumanlanguagemonkeyneurobiology

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Area of Science:

  • Comparative psychology
  • Neuroscience
  • Evolutionary biology

Background:

  • Learning to predict event sequences is fundamental to animal perception and cognition.
  • Humans exhibit exceptional sensitivity to sequencing and combinatorial abilities, particularly in language.
  • Comparative research reveals conserved neural substrates for sequence processing in humans and primates.

Purpose of the Study:

  • To synthesize current research on sequence processing in humans and nonhuman primates.
  • To propose a novel 'ventrodorsal gradient' model of frontal cortex engagement in sequencing.
  • To explore the evolutionary origins of domain-general capacities underlying human language.

Main Methods:

  • Review and synthesis of behavioral and neuroimaging studies in humans and primates.
  • Analysis of sequence-learning paradigms to assess relational knowledge.
  • Development of a neurobiological model based on comparative data.

Main Results:

  • Evidence for evolutionarily conserved neural substrates supporting sequence processing.
  • Identification of a ventrodorsal gradient in frontal cortex engagement.
  • Correlation between sequencing complexity, frontal cortex activity, and species-specific capacities.

Conclusions:

  • Sequence processing relies on evolutionarily conserved neural mechanisms.
  • The ventrodorsal gradient model explains how frontal cortex function scales with sequencing complexity across species.
  • This framework offers insights into the evolutionary basis of human language capacities.