Update BrainBench card with overview image and citation

README.md

@@ -23,11 +23,13 @@ BrainBench is a benchmark for evaluating AI agents on practical EEG and polysomn
 
 No original EEG or PSG recordings are distributed in this repository. Users must obtain the required source datasets from their official providers and prepare them locally with the BrainBench framework.
 
+![BrainBench overview](assets/intro.png)
+
 ## Quick links
 
 - Dataset: <https://huggingface.co/datasets/xbb083/BrainBench>
-- Code: <https://github.com/xiaobaben/BrainBench>
-- Paper: <https://arxiv.org/abs/2608.04156>
+- Code: to be released on GitHub
+- Paper: BrainBench (link to be added after public release)
 
 ## Contents
 
@@ -46,14 +48,14 @@ The current release contains 1,975 fixed evaluation instances across the first t
 <root>/
 ├── foundational_analysis/
 │   └── cases/
-│       ├── case1/
-│       │   ├── case1_01.json
+│       ├── case01/
+│       │   ├── case01_01.json
 │       │   └── ...
 │       └── ...
 └── sleep_assessment/
     └── cases/
-        ├── case1/
-        │   ├── case1_01.json
+        ├── case01/
+        │   ├── case01_01.json
         │   └── ...
         └── ...
 ```
@@ -61,8 +63,8 @@ The current release contains 1,975 fixed evaluation instances across the first t
 Conventions:
 
 - `<subset>/cases/` contains all fixed instances for one BrainBench subset.
-- `caseN/` identifies one benchmark task.
-- `caseN_XX.json` identifies one fixed instance of that task.
+- `caseNN/` identifies one benchmark task; the numeric suffix is zero-padded for natural file-browser ordering.
+- `caseNN_XX.json` identifies one fixed instance of that task.
 - Case JSON files are intended to remain unchanged during evaluation.
 
 ## Case JSON format
@@ -172,7 +174,7 @@ import json
 from pathlib import Path
 
 case_path = Path(
-    "benchmarks/foundational_analysis/cases/case1/case1_01.json"
+    "benchmarks/foundational_analysis/cases/case01/case01_01.json"
 )
 case = json.loads(case_path.read_text(encoding="utf-8"))
 
@@ -209,9 +211,21 @@ The BrainBench code release will document the official access routes and require
 
 ## License and citation
 
-The formal license and paper citation will be synchronized with the public BrainBench GitHub and paper releases. The current Hugging Face metadata uses `license: other` to avoid assigning an unapproved license.
+The current Hugging Face metadata uses `license: other` because the formal dataset license is maintained with the BrainBench code and paper releases.
+
+If you use BrainBench, please cite:
 
-If you use BrainBench, please cite the BrainBench paper once the public citation is available.
+```bibtex
+@misc{zhou2026brainbenchbenchmarkinglargelanguage,
+      title={BrainBench: Benchmarking Large Language Models for Comprehensive EEG Understanding},
+      author={Yangxuan Zhou and Sha Zhao and Yuning Chen and Chen Wu and Jiquan Wang and Shijian Li and Gang Pan},
+      year={2026},
+      eprint={2608.04156},
+      archivePrefix={arXiv},
+      primaryClass={cs.AI},
+      url={https://arxiv.org/abs/2608.04156},
+}
+```
 
 ## Acknowledgements