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Related Experiment Videos

Human orbitofrontal cortex: cytoarchitecture and quantitative immunohistochemical parcellation

P R Hof1, E J Mufson, J H Morrison

  • 1Fishberg Research Center for Neurobiology, Mount Sinai School of Medicine, New York, New York 10029, USA.

The Journal of Comparative Neurology
|August 14, 1995
PubMed
Summary

This study maps the human orbitofrontal cortex using neurofilament and calcium-binding proteins. Distinct patterns reveal regional specialization, providing an anatomical basis for its complex functions.

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Area of Science:

  • Neuroscience
  • Neuroanatomy

Background:

  • The human orbitofrontal cortex (OFC) is crucial for integrating emotion, behavior, and sensory information.
  • Its detailed cyto- and chemo-architectonic organization remains incompletely understood.

Purpose of the Study:

  • To delineate the cyto- and chemo-architectonic organization of the human OFC.
  • To identify specific neuronal markers for regional parcellation.

Main Methods:

  • Utilized immunohistochemistry with antibodies against nonphosphorylated neurofilament triplet protein, parvalbumin, and calretinin.
  • Correlated immunolabeling patterns with Nissl-stained cytoarchitecture.

Main Results:

  • Neurofilament protein distribution varied across OFC regions, with distinct patterns in agranular, dysgranular, and granular areas.
Keywords:
NASA Discipline NeuroscienceNon-NASA Center

Related Experiment Videos

  • Parvalbumin and calretinin interneuron distribution was generally homogeneous, with regional variations noted.
  • Specific regional patterns of parvalbumin immunoreactivity in neuropil and fibers suggest specialized thalamocortical projections.

    • Conclusions:

    • The identified region-specific neuronal markers provide a detailed anatomical parcellation of the human OFC.
    • This anatomical substrate may underlie the localization of diverse functions within the OFC.