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[The insula and the central core concept].

Guilherme Carvalhal Ribas1, Evandro de Oliveira

  • 1Setor de Neuroanatomia Aplicada, Departamento de Cirurgia, Faculdade de Medicina, Universidade de São Paulo, Rua Prof. Eduardo Monteiro 567, 05614-120 São Paulo, SP, Brazil. guilherme@ribas.med.br

Arquivos De Neuro-Psiquiatria
|April 11, 2007
PubMed
Summary
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This study details the brain's central core, including the insula, basal ganglia, thalamus, and internal capsule. Understanding this core structure is vital for developing standardized microneurosurgical approaches to brain lesions.

Area of Science:

  • Neuroanatomy
  • Neurosurgery

Context:

  • The brain's central core, comprising the insula, basal ganglia, thalamus, and internal capsule, is crucial for neurosurgical practice.
  • A detailed understanding of this region's three-dimensional structure and its relationship with surrounding lesions enhances surgical planning.

Purpose:

  • To provide a comprehensive characterization of the brain's central core.
  • To highlight the anatomical relationships essential for developing standardized microneurosurgical techniques.

Summary:

  • The central core, morphologically resembling a brainstem head, is externally defined by the insula and internally by the basal ganglia, thalamus, and internal capsule.
  • The internal capsule's fibers (anterior limb, knee, posterior limb) connect the central core to the hemisphere, housing critical motor and sensory tracts.

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  • The insula acts as a lateral shield, protecting the subcortical structures, with specific fiber tracts like the optic and auditory radiations located within the internal capsule.

    • Impact:

    • Facilitates the development and application of more standardized microneurosurgical approaches.
    • Improves the three-dimensional understanding of brain structures and associated lesions for neurosurgeons.
    • Enhances surgical precision by emphasizing the critical relationships between the central core, thalamus, and internal capsule fibers.