Visual sources.
Cortical geometry
FreeSurfer fsaverage5 pial surfaces and sulcal depth, as distributed in Nilearn 0.12.1. 10,242 vertices and 20,480 triangles in each hemisphere. Fischl, Sereno, Tootell & Dale (1999), High-resolution intersubject averaging and a coordinate system for the cortical surface. Dataset documentation; pinned source URLs, checksums and binary format.
Modified version: GIFTI arrays converted to compact little-endian binary without changing mesh geometry. Rendering converts native surface RAS axes to browser coordinates and scales by 1/100. Sulcal depth shades cortical folds. Network coordinates, intensity, transitions, and deep markers are authored teaching illustrations. They are not a registered atlas or measured reading activation. The cortical template does not include an anatomical brainstem or subcortical segmentation.
Original game
Original Spotlight by Claude for Machine Spirits, retrieved 19 September 2026 from the published activity. All six levels, all 16 scored puzzles, introduction and sandbox retained. Explanations corrected; added host messaging, keyboard focus, touch targets, manual initial playback and local shared demo data. No trained model data is implied.
Local runtime
Three.js 0.180.0, distributed under the MIT license. Nilearn’s code is BSD-licensed; its fsaverage dataset documentation separately lists the data license as unknown. The upstream FreeSurfer agreement explicitly covers software and data, so its complete terms are retained here alongside Nilearn attribution.
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