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Brodmann's Areas

Published: Jul 18, 2023
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Updated: Jul 20, 2023
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Written by Oseh Mathias

Founder, SpeechFit

Brodmann Areas refer to a system of brain region classification that is widely used in neuroscience. This system was created by the German neurologist Korbinian Brodmann in the early 20th century. Brodmann used cytoarchitecture, the study of cellular organization, to define 52 distinct regions within the human brain. Each of these regions, or Brodmann Areas, is characterized by a unique structure and neuronal organization.

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A network approach to the topological organization of the Brodmann map. Bruner, E. (2022) [1]

Korbinian Brodmann (1868-1918) was a meticulous and methodical individual who combined the traits of a keen observer and a skilled researcher. He studied medicine at the University of Munich and later specialised in neurology and psychiatry. His interest in the brain's microscopic structure was intense and unwavering, and it was this passion that drove his pioneering work in the field of brain mapping.

In his professional life, Brodmann was recognised for his detailed and labor-intensive approach to research. He applied histology, the microscopic study of tissue structures, to study the brain, using cell-staining techniques to discern the unique cellular compositions of different brain regions. His studies led to the development of his eponymous Brodmann Areas, a landmark contribution to neuroscience.

There are several reasons why Brodmann's Areas became so widely adopted by neuroscientists:

  1. Detailed Mapping: Brodmann's work represented one of the first detailed and systematic mappings of the brain's cortical surface. This provided a reference point that neuroscientists could use to understand and communicate about the brain's structure and function.

  2. Link to Function: Brodmann's areas established a meaningful connection between brain anatomy and function. For instance, Brodmann Area 4 is known as the primary motor cortex, Area 17 as the primary visual cortex, and Areas 44 and 45 are associated with Broca's area, responsible for speech production.

  3. Foundation for Future Research: Brodmann's work laid the groundwork for further exploration and understanding of the brain. Many subsequent studies have used Brodmann's areas as a starting point, which has solidified their use and importance in neuroscientific research.

  4. Common Language: Despite advancements in brain imaging and increased understanding of the brain's complexity, Brodmann's areas offer a consistent nomenclature that is widely understood and used by neuroscientists globally.

While Brodmann's areas continue to be useful for certain types of research and communication about brain anatomy, it's worth noting that they do not fully capture the brain's complexity. Modern neuroscience has found the brain to have a much more intricate organisation of functions than was known in Brodmann's time. Despite these limitations, the widespread adoption of Brodmann's areas attests to his enduring impact on the field of neuroscience.


Author

Oseh Mathias

SpeechFit Founder

Oseh is a software engineer, entrepreneur and founder of SpeechFit. Oseh is passionate about improving health and wellbeing outcomes for neurodiverse people and healthcare providers alike.


References
  • Bruner, E. (2022). A network approach to the topological organization of the Brodmann map. The Anatomical Record. Issue Online: 07 November 2022. https://doi.org/10.1002/ar.24941