The critical preparation is repeated freezing and thawing after formalin fixation. This cycle generates ice crystals within the tissue, creating separation between myelinated fiber bundles and surrounding structures. That separation makes the bundles more accessible to controlled removal of cortex and fibers, allowing their gross course to be examined in three dimensions.
Conventional sections present anatomy as separate slices, which can make the continuity and spatial relationships of white matter pathways difficult to appreciate. Klingler dissection instead exposes connected bundles through progressive removal of overlying tissue. This perspective helps distinguish association, commissural, and projection pathways according to their three-dimensional organization.
Dissection provides a direct gross-anatomical view of exposed white matter pathways, whereas diffusion tractography and clinical imaging represent those pathways through imaging-based methods. Linking the approaches helps researchers relate visible fiber organization to tractography findings and imaging observations, strengthening interpretation of brain connectivity across anatomical and clinical research settings.
A typical workflow begins with formalin fixation, followed by repeated freezing and thawing. After this preparation, the operator removes overlying cortex and fibers through careful blunt dissection. The exposed anatomy can then be examined as connected white matter pathways rather than as isolated sections, supporting three-dimensional study of their organization.
The method supports examination of association, commissural, and projection pathways. Studying these categories in an exposed anatomical preparation allows their relationships and courses to be considered together, rather than inferred only from separate sections. This makes the technique useful for organizing neuroanatomical knowledge and connecting pathway structure with broader questions about brain connectivity.
In neuroscience education, exposed pathways provide a tangible way to study three-dimensional white matter organization. In research, the findings can be compared with diffusion tractography and clinical imaging to investigate connectivity. The same anatomical information also supports planning for neurosurgical procedures by clarifying the location and arrangement of pathways that may be relevant to an operative approach.