The Basal Ganglia Related System of Primates: Definition, Description and Informational Analysis

  • Gérard Percheron
  • Chantal François
  • Jérôme Yelnik
  • Gilles Fénelon
  • Boualam Talbi
Part of the Advances in Behavioral Biology book series (ABBI, volume 41)


In the first IBAGS book we tried to define the basal ganglia and to determine their components using rational criteria. Eight years later, an answer, acceptable by most specialists, may be given. It now appears advisable to place the set of the basal ganglia in a more general system also including their inputs and outputs. Despite numerous attempts at finding direct descending connections to motoneurons, the motor action of the basal ganglia, as classically stressed, is exerted through the pyramidal system. The “basal ganglia related system” might then be seen as a cortico-baso-thalamo-cortical circuit comprising:(1) the cortico-striatal connection, (2) the striato-pallidonigral connection of the “basal ganglia core” made up of the striatum and its targets, the two pallidal nuclei and the substantia nigra (pars reticulata and lateralis), (3) the regulation of the core by the pars compacta of the substantia nigra, the subthalamic nucleus, the central complex (centre médian-parafasciculaire) and the pedunculo-pontine complex, (4) the output of the core:the pallido-thalamic and nigro-thalamic connections, (5) the pallidal thalamocortical and the nigral thalamo-cortical connections, (6) cortico-cortical connections, and (7) the source of the cortico-spinal connection (see Fig. 1 and Table I). Our analysis, almost exclusively based on data obtained in primates, will follow these steps successively.


Basal Ganglion Motor Cortex Substantia Nigra Supplementary Motor Area Subthalamic Nucleus 
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Copyright information

© Plenum Press, New York 1994

Authors and Affiliations

  • Gérard Percheron
    • 1
  • Chantal François
    • 1
  • Jérôme Yelnik
    • 1
  • Gilles Fénelon
    • 1
  • Boualam Talbi
    • 1
  1. 1.Laboratoire de neuromorphologie informationnelle et de neurologie expérimentale du mouvementU106 INSERM, Pavillon Inserm, Hôpital de la SalpêtrièreParis Cedex 13France

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