EEG dataset for multi-class Chinese character stroke and pinyin vowel handwriting imagery (21 subjects, CCS-HI & SV-HI)

Version HistoryVersion 4.0 (December 21, 2025)Title correction: Updated the project title to reflect the expanded sample size (from "16 subjects" to "21 subjects"), consistent with the dataset content in Version 3.0.Version 3.0 (December 21, 2025)Dataset expansion: Added 5 new participants (sub-21 to sub-25), increasing total sample size from 16 to 21 (13 males, 8 females; age 22–32).Upload format adjustment:1. Root-level files (e.g., `dataset_description. json`, `participants. tsv`) are uploaded individually (no compression);2. Internal subfolders (e.g., `code/`, `sub-01/` to `sub-25/`, `stimuli/`) are uploaded as separate ZIP archives (retaining BIDS structure when extracted).3. Metadata update: Updated `participants. tsv/json` to include new subjects’ demographics (age, gender, education level).4. BIDS validation: The full dataset (post-extraction) passed BIDS compliance checks via the official BIDS Validator.Dataset Overview (Version 3.0)This EEG dataset supports Chinese handwriting imagery BCI research, with 2 tasks:CCS-HI: 5 Chinese character strokes (200 trials/session)SV-HI: 6 Pinyin monophthongs (240 trials/session)Key updates (vs. v2.0):Total subjects: 21 (13M/8F)Root files are directly accessible online; subfolders are provided as structured ZIPs (supports incremental downloads)Full metadata for new participantsFor detailed experimental design/preprocessing, refer to Version 2.0.UsageAccess via Figshare: https://doi.org/10.6084/m9.figshare.29987758.v3Root-level files (e.g., metadata) can be viewed/downloaded directly;To access subfolders (e.g., `sub-01/`, `code/`), download their corresponding ZIP archives and extract (retains BIDS structure);Incremental download support: Researchers who previously downloaded `sub-01` to `sub-20` can only download the new `sub-21` to `sub-25` ZIPs to update their dataset.Associated PublicationThe study presenting this dataset has been published in the peer-reviewed journal Scientific Data. Please refer to the following article for detailed methodology and analysis:Wang, F., Chen, Y., Wang, P., Gong, A., Xu, J. & Fu, Y. An EEG dataset for handwriting imagery decoding of Chinese character strokes and Pinyin single vowels. Sci. Data 13, 332 (2026).DOI: https://doi.org/10.1038/s41597-026-06708-3Citation RequirementIf you use this dataset in your research, please cite both the dataset and the associated article above to ensure proper attribution and reproducibility.版本历史 版本4.0（2025年12月21日）：标题修正：更新项目标题以体现扩大后的样本量（从“16名受试者”调整为“21名受试者”），与3.0版本中的数据集内容保持一致。 版本3.0（2025年12月21日）：数据集扩容：新增5名受试者（sub-21至sub-25），总样本量从16人增至21人（其中男性13名，女性8名；年龄区间22~32岁）。 上传格式调整： 1. 根目录文件（如`dataset_description.json`、`participants.tsv`）单独上传（无需压缩）； 2. 内部子文件夹（如`code/`、`sub-01/`至`sub-25/`、`stimuli/`）以独立ZIP压缩包形式上传（解压后保留脑成像数据结构（Brain Imaging Data Structure，BIDS）格式）； 3. 元数据更新：更新`participants.tsv/json`以纳入新增受试者的人口统计学信息（年龄、性别、受教育程度）； 4. BIDS合规性验证：完整数据集（解压后）通过官方BIDS验证工具的合规性检查。 数据集概述（3.0版本） 本脑电图（Electroencephalogram, EEG）数据集支持中文手写意象脑机接口（Brain-Computer Interface, BCI）研究，包含两项任务： CCS-HI：5个汉字笔画（每个会话200次试次） SV-HI：6个汉语拼音单韵母（每个会话240次试次） 相较于v2.0的主要更新： - 总受试者人数：21名（男13名/女8名） - 根目录文件可直接在线访问；子文件夹以结构化ZIP包形式提供（支持增量下载） - 新增受试者的完整元数据 - 详细实验设计与预处理流程请参考v2.0版本。 使用方法 可通过Figshare平台获取：https://doi.org/10.6084/m9.figshare.29987758.v3 - 根目录文件（如元数据）可直接在线查看/下载； - 如需访问子文件夹（如`sub-01/`、`code/`），请下载对应ZIP压缩包并解压（解压后保留BIDS格式）； - 增量下载支持：此前已下载`sub-01`至`sub-20`的研究人员仅需下载新增的`sub-21`至`sub-25` ZIP包即可完成数据集更新。 相关发表论文 发布本数据集的研究已发表于同行评议期刊《Scientific Data》。如需了解详细研究方法与分析流程，请参考以下论文： Wang, F., Chen, Y., Wang, P., Gong, A., Xu, J. & Fu, Y. An EEG dataset for handwriting imagery decoding of Chinese character strokes and Pinyin single vowels. Sci. Data 13, 332 (2026). DOI: https://doi.org/10.1038/s41597-026-06708-3 引用要求 若您在研究中使用本数据集，请同时引用本数据集与上述关联论文，以确保正确的学术归因与可重复性。