PROVENANCE & USE TERMS · RESEARCH ONLY · NOT NAVIGATION

What this atlas contains

Hodos was created by Dr. Erion de Andrade, a neurosurgeon based in Porto Alegre, Brazil, focused on brain tumors, pituitary tumors and skull base surgery. Professional website ↗

This is group reference anatomy. The surfaces and pathways come from different atlas constructions using MNI coordinate conventions. Their juxtaposition is illustrative: no quantitative cross-atlas distance, endpoint connectivity or patient registration is claimed. Lesson text is an educational draft awaiting anatomical review. Research only · not navigation: nothing on these pages is registered to a patient or fit for surgical planning.

Cortical surface and parcels

HCP S1200 group-average midthickness surface, fs_LR 32k, MSMAll; 32,492 vertices per hemisphere. HCP-MMP1 labels use matching compressed vertex order and separate left/right tables. Clicking reports the nearest vertex of a surface triangle, without interpolating categorical labels.

Van Essen et al., 2013 · Glasser et al., 2016 · HCP Open Access Data Use Terms

Resting-state networks

Yeo-7 and Yeo-17 intrinsic functional connectivity networks (Yeo et al., 2011), estimated by clustering resting-state fMRI from 1,000 healthy adults and carried here as per-vertex labels on the same fs_LR 32k surface (resampled by the DiedrichsenLab fs_LR_32 project). A network is a population cluster of correlated signal at rest: it is not a task map, not a lesion–deficit map, and it says nothing about any individual patient. "Salience" in this viewer is the Yeo-7 ventral attention network, which finer parcellations split into salience and ventral-attention components. Only the 7-network set is exposed in the interface; the 17-network labels ship for later use. The network reported for a click is the label at that vertex, never an inference for the whole parcel.

Yeo et al., 2011 · PMID 21653723 · fs_LR 32k label files · FreeSurfer atlas license

Sampled reference pathways

HCP1065 population-average tractography, Yeh 2022. The reference preparation samples at most 220 streamlines per bundle and resamples each to 28 points. These are display paths, not axons or patient reconstructions. No tract length, conduction velocity or latency is inferred from their animation. Paired traces are a direction-neutral teaching effect.

Yeh, 2022 · Original atlas and terms · CC BY-SA 4.0. The redistributed tract binary and metadata retain this license.

Deep and inferior context

Melbourne Subcortex scale 1 supplies gross reference structures. Surfaces were extracted and smoothed by the reference pipeline; anterior/posterior thalamic regions are merged. No precise relay nucleus is identified. The inferior context mesh is a remainder of the MNI152NLin2009cAsym brain mask after cortical exclusion, not a named cerebellar or brainstem segmentation.

Tian et al., 2020 · Melbourne atlas license · Fonov et al., 2011 · MNI permission notice

Preparation and attribution

Public web assets prepared by Amy Sterling, human-brain, revision e02876655d0216995340a9c153d37d49ff649078. Geometry and tract binary are unchanged. Hodos uses the TractLab reference pipeline to extract only the HCP-MMP1 block, preserve vertex order and shorten paths, with its own UI and lesson drafts. Exact source and installed asset hashes.

Data were provided in part by the Human Connectome Project, WU-Minn Consortium (Principal Investigators: David Van Essen and Kamil Ugurbil; 1U54MH091657) funded by the 16 NIH Institutes and Centers that support the NIH Blueprint for Neuroscience Research; and by the McDonnell Center for Systems Neuroscience at Washington University.

Hodos original software and documentation are available under the MIT License in the public source repository. Third-party data, photographs, fonts and software retain their own terms.

Three.js 0.185.0 and its bundled Draco decoder run locally. Three.js MIT license · Draco license. Amy Sterling's MIT-licensed vertex correspondence/picking technique is acknowledged in Third-party notices and software licenses.

Playfair Display by the Playfair Display Project Authors is served locally, unchanged, under the SIL Open Font License 1.1. The wordmark and teaching headings do not require Google Fonts access.