---
license: apache-2.0
pretty_name: BrainFLORA
language:
- en
tags:
- brain-computer-interface
- neuroimaging
- eeg
- meg
- fmri
- image-retrieval
- image-reconstruction
- image-captioning
---

# BrainFLORA Dataset and Checkpoints

This repository hosts the released assets for **BrainFLORA: Uncovering Brain Concept Representation via Multimodal Neural Embeddings**.

- Paper: https://arxiv.org/abs/2507.09747
- Code: https://github.com/ncclab-sustech/BrainFLORA

BrainFLORA aligns EEG, MEG, and fMRI signals with visual-language representations for visual retrieval, image reconstruction, and image captioning.

## Checkpoints

| File | Purpose |
| --- | --- |
| `checkpoints/eeg_01-06_01-46_150.pth` | EEG single-modality retrieval encoder |
| `checkpoints/meg_01-11_14-50_150.pth` | MEG single-modality retrieval encoder |
| `checkpoints/fmri_01-18_01-35_150.pth` | fMRI single-modality retrieval encoder |
| `checkpoints/Unified_EEG+MEG+fMRI_EEG_01-27_02-32_60.pth` | Unified EEG+MEG+fMRI retrieval model |
| `checkpoints/reconstruction_checkpoints/150.pth` | Unified high-level reconstruction encoder |
| `checkpoints/reconstruction_checkpoints/prior_diffusion/150.pth` | Reconstruction diffusion prior |
| `checkpoints/caption_checkpoints/90.pth` | Caption-aligned unified encoder |
| `checkpoints/caption_checkpoints/prior_diffusion/100.pth` | Caption diffusion prior |

## External Caption Model

The Shikra model and `mm_projector.bin` are not hosted in this dataset repository. Download them from the original Shikra resources and place them under the code repository as:

```text
external_models/shikra-7b
external_models/mm_projector.bin
```

References:

- Shikra paper: https://arxiv.org/abs/2306.15195
- Shikra code and model instructions: https://github.com/shikras/shikra
- Hugging Face model page: https://huggingface.co/shikras/shikra-7b-delta-v1

## Usage

Clone or download this dataset repository, then follow the reproduction commands in the BrainFLORA code repository README.

```bash
git clone https://github.com/ncclab-sustech/BrainFLORA.git
cd BrainFLORA
```

Restore the downloaded assets so the code repository has the expected layout:

```text
BrainFLORA/checkpoints/
BrainFLORA/features/
BrainFLORA/fmri_dataset/
BrainFLORA/meg_dataset/
```

## Related Projects

BrainFLORA uses BrainHub-style caption metrics for caption evaluation. Please also cite the UMBRAE/BrainHub project when using these evaluation components.

- UMBRAE project: https://weihaox.github.io/UMBRAE/
- UMBRAE code: https://github.com/weihaox/UMBRAE
- BrainHub benchmark: https://github.com/weihaox/BrainHub

## Citation

```bibtex
@inproceedings{li2025brainflora,
  author = {Li, Dongyang and Qin, Haoyang and Wu, Mingyang and Wei, Chen and Liu, Quanying},
  title = {BrainFLORA: Uncovering Brain Concept Representation via Multimodal Neural Embeddings},
  year = {2025},
  isbn = {9798400720352},
  publisher = {Association for Computing Machinery},
  address = {New York, NY, USA},
  url = {https://doi.org/10.1145/3746027.3754996},
  doi = {10.1145/3746027.3754996},
  booktitle = {Proceedings of the 33rd ACM International Conference on Multimedia},
  pages = {5577--5586}
}


@inproceedings{xia2024umbrae,
  author = {Xia, Weihao and de Charette, Raoul and Oztireli, Cengiz and Xue, Jing-Hao},
  title = {UMBRAE: Unified Multimodal Brain Decoding},
  booktitle = {European Conference on Computer Vision (ECCV)},
  year = {2024}
}
```