Related Experiment Video
Updated: Aug 9, 2026
Fiber Connections of the Supplementary Motor Area Revisited: Methodology of Fiber Dissection, DTI, and Three Dimensional Documentation
Published on: May 23, 2017
Fiber dissection technique: lateral aspect of the brain
U Türe1, M G Yaşargil, A H Friedman
1Department of Neurosurgery, Marmara University School of Medicine, Istanbul, Turkey. ugurture@turk.net
Objective:
The fiber dissection technique involves peeling away the white matter tracts of the brain to display its three-dimensional anatomic organization. Early anatomists demonstrated many tracts and fasciculi of the brain using this technique. The complexities of the preparation of the brain and the execution of fiber dissection have led to the neglect of this method, particularly since the development of the microtome and histological techniques. Nevertheless, the fiber dissection technique is a very relevant and reliable method for neurosurgeons to study the details of brain anatomic features.
Methods:
Twenty previously frozen, formalin-fixed human brains were dissected from the lateral surface to the medial surface, using the operating microscope. Each stage of the process is described. The primary dissection tools were handmade, thin, wooden spatulas with tips of various sizes.
Results:
We exposed and studied the myelinated fiber bundles of the brain and acquired a comprehensive understanding of their configurations and locations.
Conclusion:
The complex structures of the brain can be more clearly defined and understood when the fiber dissection technique is used. This knowledge can be incorporated into the preoperative planning process and applied to surgical strategies. Fiber dissection is time-consuming and complex, but it greatly adds to our knowledge of brain anatomic features and thus helps improve the quality of microneurosurgery. Because other anatomic techniques fail to provide a true understanding of the complex internal structures of the brain, the reestablishment of fiber dissection of white matter as a standard study method is recommended.
Insights
Fiber dissection reveals the brain's intricate white matter tracts, offering neurosurgeons a detailed 3D view for improved surgical planning and understanding of complex brain anatomy.
Area of Science:
- Neuroanatomy
- Surgical Neurology
Background:
- The fiber dissection technique, historically used to visualize brain's 3D white matter organization, has been largely neglected due to its complexity and the advent of histological methods.
- Despite neglect, fiber dissection remains a valuable and reliable method for neurosurgeons to study detailed brain anatomy.
Purpose of the Study:
- To re-evaluate and recommend the fiber dissection technique for studying brain white matter anatomy.
- To highlight the technique's relevance for neurosurgical preoperative planning and strategy.
Main Methods:
- Dissection of twenty frozen, formalin-fixed human brains from lateral to medial surfaces using an operating microscope.
- Utilized handmade, thin wooden spatulas of various sizes as primary dissection tools.
- Detailed description of each stage of the fiber dissection process.
Main Results:
- Successfully exposed and studied myelinated fiber bundles of the brain.
- Achieved a comprehensive understanding of the configurations and locations of white matter tracts.
- Demonstrated the technique's ability to reveal complex internal brain structures.
Conclusions:
- Fiber dissection enhances the understanding of complex brain structures and white matter tracts.
- Knowledge gained from fiber dissection can be directly applied to preoperative planning and surgical strategies.
- Recommends re-establishing fiber dissection as a standard study method for improving microneurosurgery due to its superior visualization of internal brain anatomy compared to other techniques.
