[ICLR 2026]
EgoBrain: Synergizing Minds and Eyes For Human Action Understanding

東京大学 The Univerisity of Tokyo X 微軟亞洲研究院 Microsoft Research Asia

Nie Lin · Yansen Wang · Dongqi Han · Weibang Jiang · Jingyuan Li · Ryosuke Furuta · Yoichi Sato^* · Dongsheng Li^* · *(Co-corresponding authors)^*

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This is the official dataset repository of our ICLR 2026 paper "EgoBrain: Synergizing Minds and Eyes For Human Action Understanding". Hope to share our work in Rio de Janeiro, Brazil 🇧🇷, April, 2026～!!

Nie (Elon) Lin, Yansen Wang, Dongqi Han, Weibang Jiang, Jingyuan Li, Ryosuke Furuta, Yoichi Sato*, Dongsheng Li* (*co-corresponding authors). "EgoBrain: Synergizing Minds and Eyes For Human Action Understanding", ICLR 2026.

📢 News

A note from the EgoBrain Team (2026-07-02):

I want to apologize for the pause in EgoBrain dataset maintenance and updates since late April. This was mainly due to the preparation needed for attending ICLR 2026 in Brazil 🇧🇷, followed by other ongoing research threads after returning from the conference, as well as preparations for my upcoming visiting position at Carnegie Mellon University. I'll be completing the release and update of all remaining data within the coming week.

Because egocentric video can easily contain information that reveals subject privacy, each video needs to be carefully reviewed and processed from scratch before release — this is why the process takes time. If you come across any content in the released EgoBrain data that you believe may reveal a subject's private information, please contact me immediately at [email protected], and I will re-process and re-upload the corresponding video right away.

Thank you for your patience and understanding — I hope we can build the EgoBrain community together.

EgoBrain Team (UTokyo X MSRA)

• [2026-07-05]: The complete EgoBrain dataset is now fully released — have fun!
• [2026-07-05]: Released Subject P0040 4K anon/raw egocentric video (28.0 GB).
• [2026-07-05]: Released Subject P0039 4K anon/raw egocentric video (54.7 GB).
• [2026-07-04]: Released Subject P0038 4K anon/raw egocentric video (41.7 GB).
• [2026-07-04]: Released Subject P0037 4K anon/raw egocentric video (51.9 GB).
• [2026-07-04]: Released Subject P0036 4K anon/raw egocentric video (34.9 GB).
• [2026-07-04]: Released Subject P0035 4K anon/raw egocentric video (53.1 GB).
• [2026-07-03]: Released Subject P0034 4K anon/raw egocentric video (40.0 GB).
• [2026-07-03]: Released Subject P0033 4K anon/raw egocentric video (43.7 GB).
• [2026-07-03]: Released Subject P0032 4K anon/raw egocentric video (37.8 GB).
• [2026-07-03]: Released Subject P0031 4K anon/raw egocentric video (34.0 GB).
• [2026-07-03]: Released Subject P0030 4K anon/raw egocentric video (36.1 GB).
• [2026-07-03]: Released Subject P0029 4K anon/raw egocentric video (42.2 GB).
• [2026-07-03]: Released Subject P0028 4K anon/raw egocentric video (49.9 GB).
• [2026-07-02]: Released Subject P0027 4K anon/raw egocentric video (36.6 GB).
• [2026-07-02]: Released Subject P0026 4K anon/raw egocentric video (28.6 GB).
• [2026-07-02]: Released Subject P0025 4K anon/raw egocentric video (35.5 GB).
• [2026-04-16]: Released Subject P0024 4K anon/raw egocentric video (37.6 GB).
• [2026-04-16]: Released Subject P0023 4K anon/raw egocentric video (43.7 GB).
• [2026-04-14]: Released Subject P0022 4K anon/raw egocentric video (48.1 GB).
• [2026-04-07]: Released Subject P0021 4K anon/raw egocentric video (32.7 GB).
• [2026-04-05]: Released Subject P0020 4K anon/raw egocentric video (46.0 GB).
• [2026-04-05]: Released Subject P0019 4K anon/raw egocentric video (26.1 GB).
• [2026-04-05]: Released Subject P0018 4K anon/raw egocentric video (37.6 GB).
• [2026-04-05]: Released Subject P0017 4K anon/raw egocentric video (24.3 GB).
• [2026-04-04]: Released Subject P0016 4K anon/raw egocentric video (54.2 GB).
• [2026-03-01]: Released Subject P0015 4K anon/raw egocentric video (50.0 GB).
• [2026-02-27]: Released Subject P0014 4K anon/raw egocentric video (46.4 GB).
• [2026-02-26]: Released Subject P0012 4K anon/raw egocentric video (35.9 GB).
• [2026-02-23]: Released Subject P0013 4K anon/raw egocentric video (37.2 GB).
• [2026-02-22]: Released Subject P0011 4K anon/raw egocentric video (38.8 GB).
• [2026-02-19]: Released Subject P0010 4K anon/raw egocentric video (23.9 GB).
• [2026-02-19]: Released Subject P0009 4K anon/raw egocentric video (28.8 GB).
• [2026-02-19]: Released Subject P0008 4K anon/raw egocentric video (24.5 GB).
• [2026-02-19]: Released Subject P0007 4K anon/raw egocentric video (27.8 GB).
• [2026-02-19]: Released Subject P0006 4K anon/raw egocentric video (46.1 GB).
• [2026-02-18]: Released Subject P0005 4K anon/raw egocentric video (58.5 GB).
• [2026-02-18]: Released Subject P0004 4K anon/raw egocentric video (32.5 GB).
• [2026-02-17]: Released Subject P0003 4K anon/raw egocentric video (20.0 GB).
• [2026-02-17]: Released Subject P0002 4K anon/raw egocentric video (44.4 GB).
• [2026-02-14]: Released Subject P0001 4K anon/raw egocentric video (53.0 GB).
• [2026-02-13]: Successfully deployed the EgoBrain anonymization pipeline.
• [2026-02-09]: Released the IMU portion of the EgoBrain dataset (25.4 GB).
• [2026-02-08]: Released the EEG portion of the EgoBrain dataset (13.9 GB).
• [2026-02-01]: Created the Hugging Face repository for ut-vision/EgoBrain.
• [2026-01-26]: 🎉 EgoBrain has been accepted to ICLR 2026! See you in Brazil 🇧🇷!

📂 Dataset Structure

EgoBrain/
├── assets/
├── P0001/
│   ├── EmoTiv_FLEX_2_Gel/
│   │   └── Phase_2/
│   │       ├── *.edf
│   │       ├── *.md.edf
│   │       ├── *_intervalMarker.csv
│   │       ├── *_survey.csv
│   │       └── *.json
│   ├── GoPro_HERO12_Ego/
│   │       ├── GX*.MP4
│   │       ├── GX*.MP4
│   │       ├── ...
│   │       └── GX*.MP4
│   └── WitMotion_WT9011DCL_BT50/
│   │       ├── *.txt
│   │       ├── WT901BLE67(...).wplay
│   │       ├── WT901BLE67(...).wplay
│   │       ├── WT901BLE67(...).wplay
│   │       └── WT901BLE67(...).wplay
├── P0002/
├── P0003/
├── ...
└── P0040/
└── README.md/

🌟 Acknowledgement

We sincerely thank all participants (P0001~P0040) who contributed their time and effort to the data collection process.

This project was initiated and developed during Nie Lin’s research internship at Microsoft Research Asia (MSRA), and later continued at the Institute of Industrial Science (IIS), The University of Tokyo. We thank all collaborators and mentors at MSRA and IIS for their valuable guidance and support.

We also acknowledge the support from our advisors, collaborators, and the community.

📜 License

The EgoBrain dataset is released under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.

Access to the dataset is provided through a gated repository on Hugging Face. Users must request access and agree to the dataset usage terms.

By using this dataset, you agree to:

• Use the dataset only for non-commercial research purposes
• Not redistribute the raw data
• Not attempt to identify participants
• Comply with applicable ethical and data protection regulations

If you have questions regarding licensing or usage, please contact the maintainers.

License details: https://creativecommons.org/licenses/by-nc/4.0/