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Related Experiment Videos

The visual parietal areas in the macaque monkey: current structural knowledge and ignorance.

C Cavada1

  • 1Departamento de Morfología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, 28029, Spain. carmen.cavada@uam.es

Neuroimage
|May 25, 2001
PubMed
Summary

This review examines posterior parietal cortex (PPC) parcellations, contrasting older cytoarchitectural methods with current connectional and physiological approaches. Future research should use objective methods for consistent posterior parietal cortex mapping.

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Area of Science:

  • Neuroscience
  • Neuroanatomy
  • Cognitive Neuroscience

Background:

  • Posterior parietal cortex (PPC) research has evolved from subjective cytoarchitecture to objective connectional and physiological criteria.
  • Previous parcellations identified visual areas in the intraparietal sulcus (e.g., VIP, MIP, PIP, AIP, LIP) and lateral/medial surfaces (7a, 7m, V6A).

Purpose of the Study:

  • To review classic and current parcellations of the posterior parietal cortex.
  • To highlight the shift towards connectional and physiological criteria in defining PPC areas.
  • To identify knowledge gaps in the understanding of visual parietal areas.

Main Methods:

  • Review of existing anatomical and physiological studies on posterior parietal cortex (PPC) parcellation.
  • Comparison of historical subjective cytoarchitectural methods with contemporary objective criteria.

Related Experiment Videos

  • Analysis of the literature on identified visual areas within the PPC.

    • Main Results:

    • Current PPC parcellations predominantly use connectional and physiological data, identifying five intraparietal sulcus visual areas (VIP, MIP, PIP, AIP, LIP) and others (7a, 7m, V6A).
    • Knowledge regarding the dimensions, boundaries, and connections of visual parietal areas is inconsistent.
    • Areas like LIP, 7a, and 7m are well-studied, while intraparietal areas lack detailed information.

    Conclusions:

    • The posterior parietal cortex (PPC) is increasingly understood through objective connectional and physiological mapping.
    • Significant disparities exist in the detailed knowledge of various visual PPC areas.
    • Future PPC research should employ standardized, objective methodologies for reproducible anatomical and functional parcellation.