Hodos NETWORKS & TRACTS

Lesson text is an educational draft awaiting anatomical review.

Lessons

A curriculum of relationships for neurosurgical residents. Each lesson moves from a reference view to a question you can explain.

  1. 01Reading the evidence · 4 relationships, about 8 minutes

    What the anatomy image can establish

    Use one region to distinguish a surface landmark, an atlas boundary, a reconstruction and a measured functional observation.

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  2. 02Reading the evidence · 4 relationships, about 8 minutes

    Reading a sparse or incomplete tractogram

    Distinguish visibility, reconstruction and quantitative support through practical display comparisons.

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  3. 03Regional anatomy · 10 relationships, about 20 minutes

    Central region & descending motor pathways

    Orient the central region, follow the descending corridor and distinguish cortical, capsular and cerebellar contributions to movement.

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  4. 04Regional anatomy · 7 relationships, about 16 minutes

    Internal capsule and thalamic radiations

    Read the internal capsule through its grey-matter neighbours, compare its limbs and genu, and keep reconstructed pathways separate from individual localisation.

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  5. 05Regional anatomy · 5 relationships, about 12 minutes

    Frontal aslant tract & speech planning

    Compare lateral and medial frontal anatomy, then use task-specific observations to reason about speech impairment.

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  6. 06Regional anatomy · 7 relationships, about 16 minutes

    Corpus callosum & the interhemispheric corridor

    Read the corpus callosum as a relationship set, then use its segmental topography to frame medial frontal, deep white matter and visual transfer questions.

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  7. 07Regional anatomy · 5 relationships, about 12 minutes

    Optic radiation & the temporal stem

    Follow the geniculocalcarine relationship, compare temporal-stem neighbours and reason about a contralateral visual-field deficit.

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  8. 08Regional anatomy · 6 relationships, about 14 minutes

    Ventral stream & the temporal stem

    Orient the uncinate fasciculus, compare neighbouring ventral pathways and read the temporal stem as a corridor linking anterior temporal, insular and mesial temporal anatomy.

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  9. 09Regional anatomy · 7 relationships, about 16 minutes

    The limen crossroads

    Read the limen and temporal stem as a changing three-dimensional stack of association, commissural and visual pathways, while keeping unrendered tissue layers explicit.

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  10. 10Regional anatomy · 5 relationships, about 12 minutes

    Insula, central core & interoception

    Orient the buried insular surface and its deep neighbours before considering a proposed interoceptive framework.

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  11. 11Regional anatomy · 6 relationships, about 14 minutes

    The insular floor

    Orient the buried insular surface, compare its ventral and upper relationships, and distinguish sampled pathways from the absent layers and vessels beneath it.

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  12. 12Regional anatomy · 6 relationships, about 16 minutes

    The medial system: fornix, cingulum and the Papez loop

    Compare the fornix and cingulum as distinct medial pathways, then use their place in the Papez model to qualify what a population atlas can establish.

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  13. 13Regional anatomy · 7 relationships, about 16 minutes

    Motor beyond M1: SMA, initiation and the CST body map

    Relate medial frontal organisation to initiation, then audit what the available evidence can say about a CST body map at each named level.

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  14. 14Regional anatomy · 7 relationships, about 16 minutes

    Brainstem & cranial nerve corridors

    Read the brainstem through long tracts, cerebellar peduncles and cranial nerve exits while keeping surface relationships separate from operative instructions.

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  15. 15Network lectures · 6 relationships, about 18 minutes

    Attention networks · orienting, reorienting & neglect

    Follow dorsal and ventral frontoparietal systems, compare their white matter, and build a network account of a spatial deficit.

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  16. 16Network lectures · 7 relationships, about 22 minutes

    Language networks · dorsal, ventral & frontal pathways

    Move beyond two cortical centres: compare speech-sound mapping, meaning, visual input and phrase planning across cortical and white-matter relationships.

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  17. 17Network lectures · 6 relationships, about 18 minutes

    Default mode network · hubs, subsystems & connections

    Orient medial and lateral default-network territories, compare cingulum and medial-temporal relationships, and interpret internal cognition without a “resting brain” shortcut.

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  18. 18Network lectures · 6 relationships, about 18 minutes

    Salience network · insula, cingulate & switching

    Connect frontoinsular and cingulate anatomy to salience and control, while separating overlapping network definitions and their clinical questions.

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  19. 19Network lectures · 7 relationships, about 15 minutes

    The control network: SLF II and the frontoparietal system

    Relate frontoparietal control evidence to lateral prefrontal and parietal atlas references. Compare the SLF II population sample with neighbouring SLF families while keeping network, parcel and task evidence separate.

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  20. 20Regional anatomy · 8 relationships, about 15 minutes

    The reading route: VOF, MdLF and SLF III

    Follow visual word-form evidence into occipital and posterior temporal pathway relationships, then compare the SLF branches and arcuate while keeping anatomy separate from function.

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