# mentalist

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Nilavra Sinha](https://cerebralvalley.ai/u/metalist)
- **GitHub:** https://github.com/skyy-07/3-D-Gaussian-Modelling-Using-Brain-Waves
- **Demo video:** https://youtu.be/5pmIdkMs4tM
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2941

MnemoSplat is a neuro-generative framework that translates non-invasive EEG telemetry and structured semantic schemas into navigable, spatially persistent 6-DOF 3D Gaussian Splatting (3DGS) environments—reconstructing episodic visual memory from the inside out without ever touching a recorded camera feed.

The pipeline extracts spectral band power (theta-band retrieval indices and gamma-band cognitive focus) to synthesize dynamic 2D spatio-temporal attention heatmaps. These heatmaps guide a latent generative pass that is immediately lifted into a global 3D world canvas using monocular depth estimation and visual SLAM principles. Cognitive salience directly governs Gaussian primitive density: focal recollections crystallize in sharp geometric detail, while peripheral context fades into natural volumetric bokeh viewable in WebXR.

The Problem It Solves
The Ground-Truth Leakage Bottleneck: Existing neural visual decoders either demand multi-million-dollar fMRI scanners or rely on trivial video-to-video style transfers that cheat by reading ground-truth footage. MnemoSplat achieves true zero-shot memory externalization using only non-invasive electrical telemetry and language priors.

Temporal Drift in Generative Video: Diffusion video models hallucinate and flicker across frames. By anchoring generated features into a persistent 3D Gaussian coordinate field, MnemoSplat enforces geometric consistency, scale, and spatial orientation across the entire recalled scene.

Clinical & Non-Verbal Isolation: Patients suffering from severe motor impairment (e.g., late-stage ALS, locked-in syndrome) lack expressive tools to communicate spatial and visual thoughts. Simultaneously, trauma clinicians lack objective, externalized representations of episodic triggers during PTSD memory reconsolidation therapy. MnemoSplat provides a shared, navigable reality for both.

## More from Meta Global AI Developer Hackathon

- [Char2D](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2938)
- [MiracleRaven](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2939)
- [PixieLearn](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2940)
- [NOIR](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2942)
- [Sapa](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2943)
- [h-hu](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2944)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2941. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt